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Azaleas: Meet The Royal Family

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Known as "The Royalty of the Garden," azaleas have long been adored for their brightly colored flowers and outstanding form and foliage.

Varieties to Fit Your Landscape

With thousands of varieties, there are azaleas for just about every landscape situation:

  • Deciduous varieties are considered the hardiest, many growing as far north as Zone 4. Some, such as the bright-pink roseshell azalea (Rhododendron prinophyllum), are even hardy in Zone 3. With few exceptions, most evergreen azaleas are only reliable in Zone 6.
  • Low-growing ground cover azaleas such as 'Joseph Hill', a bright-red-flowering evergreen that grows only to about a foot.
  • Tall varieties such as the white-blooming sweet azalea (R. arborescens), a deciduous plant that can reach 20 feet tall
  • Weeping azaleas, such as 'Pink Cascade'
  • And every shape and size of azalea in between!

Credit: Marlene Akeroyd

Late Blooming Varieties

While most azaleas flower in spring, there are varieties that extend the season:

  • 'Flame Creeper', an orange-flowering ground cover azalea, and 'Weston's Lemon Drop', with peachy-color buds that open to a soft yellow, both flower in late June or July.
  • The pink-flowering 'Sweet September' is an exceptionally late bloomer.

How to Grow Azaleas

The best time to plant azaleas is in late spring or early fall. Evergreen azaleas do well in partial shade with some wind protection. Deciduous varieties flower more profusely in full sun. 

  • Provide well-drained, humus rich soil that is slightly acidic (pH 4.5–6).
  • Mulch well. Shallow-rooted, azaleas tend to dry out quickly if not mulched. A mulch of oak leaf mold, pine needles, or aged oak, pine, or hemlock sawdust will keep soil acidic and moist.
  • Fertilizer isn't needed. The decaying mulch will provide all of the nutrients that azaleas need.
  • Seldom bothered by insects and diseases, azaleas require little care once established, except for watering during dry times.

"The Royalty of the Garden" seems to be a fitting name for this beautiful and majestic plant, but we've got a hunch that once your garden is filled with the colors and fragrance of beautiful blooming azaleas, you'll probably think that it's you who's getting the royal treatment.

See our Rhododendron and Azalea Plant Guide for details on how to plant and care for these gorgeous shrubs.

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Comments

I live 50 miles north of

By Lavena Cater on October 5

I live 50 miles north of Sacramento, CA. (9 growing zone) I purchased a Formosa Azalea. I would like to plant it on the east side of my home which would be exposed to morning sun only. Would you advise that I plant it where it would get less sun? It is about 2 ft high by 2 ft wide and beautiful green plant. I plan to get a kit to test the ph of my soil and amend it if necessary to create an acidic soil. Do you have any suggestions that I need to consider?

We usually advice that you

By Almanac Staff on October 6

We usually advice that you plant azalea on the east or north side of a house so that's a good call. Also, you're on the right track by providing acidic, organically enriched soil. Also, the soil needs to drain well so it doesn't get to soggy but also not too dry. Avoid watering the leaves; only water at the base.

Otherwise, take care that you do not plant the azaleas too deeply; the top of the root ball should be slightly above soil level. Avoid cultivating right around the plant as it has shallow roots that should not be disturbed.

Hi, I'm writing all the way

By Ariane Mahabir

Hi, I'm writing all the way from Trinidad and Tobago and wanted to know if azaleas can be grown here and which variety would work best in the Caribbean sun? Also can they be grown from seeds?
Thank you

Hi, I own an indoor azalea

By Mrs A I

Hi,
I own an indoor azalea and I water it every week. About 2 months ago, I realised that all the blooms were dying and then so were the buds. Soon afterwards, the leaves too started to curl up and there was no new foliage. Now only the stems remain. What did I do wrong? It is kept near the window and I changed the pot when I noticed that the flowers were dying. Any tips?

Indoor azaleas can be very

By Almanac Staff

Indoor azaleas can be very tricky. First, avoid repotting until spring when all signs of flowers are gone.
One common reason why azaleas do not survive indoors is because they need cool to cold temperatures and most homes are too warm. They also like moist air and most homes are too dry.
To keep it cool, add compost and keep it moist with soft water; their leaves do shrivel if they are underwatered or dry.
Finally, make sure your plants are in bright light but not direct sun or too much sun.
If you can keep well watered, in bright light, and cool, the plant will be happy, however, we've found most homes simply aren't cool enough.

I have just prepared a new

By Stacey Lowry

I have just prepared a new flower bed for planting and am considering azaleas and camilias. The bed faces due north and is shaded much of the day by my 2 story house. I seem to have some afternoon sun - but it is a direct hit in some areas and there is total shade in others. I live in zone 7b. Would these plants do well in this bed with this type of exposure?

Azaleas adapt to different

By Almanac Staff

Azaleas adapt to different conditions and do well in semi-shade. Camellias bloom and grow better in partial shade, with shelter from hot afternoon sun. Young plants prefer shade.

Ok ive read alot of good

By Jerry mcd

Ok ive read alot of good stuff here..my flowers came in spring now the leaves are losing the greenish color looking like they have dried up..its filtered sun on east side..I used some miracle grow...so did I kill it???

My small, store bought, pink

By Rebecca Sampson

My small, store bought, pink Azalea is looking like it is dying; the leaves are falling off as are the blooms, which I have removed. I live in Victoria, BC, and our balcony faces east. Do you have any suggestions? I do not think I am over watering it, and I have tried fertilizing it with a single packet fertilizer. I have it indoors now, and would like to know what I should do before it is too late for it.
Thank you for your time.

Azaleas like it slightly

By Almanac Staff

Azaleas like it slightly humid and cool. This can be a challenging combination in some areas.

Never let the soil dry out or it's hard to rehydrate. To bring up the humidity, you can place the plant in a dish of water and soak it for a few hours once a week.

Keep it cool (60 to 70 degrees room temperature) especially at night. It needs to be in a cool, indirect sunny area. Neve let it dry out. Keep away from drafts or heating vents.

Only fertilize lightly every month with a fertilizer low in nitrogen and high in phosphorus.

The leaves on my azaleas have

By Virginia. Marr

The leaves on my azaleas have a light green look. What do I use for black spot..?

HAVE TWO DOZ. ENCORE AZALEAS

By RICHARD PITTS

HAVE TWO DOZ. ENCORE AZALEAS PLANTED IN A RAISED BED, PART SHADE. PLANTS DID WELL THE FIRST YEAR OR TWO, BUT NOW THEY DON,T SEEM BLOOM CORRECTLY,
BUSHES ARE SPINEY, FEW LEAVES, WHAT AM I DOING WRONG!!!!

Hi, Richard, The first thing

By Almanac Staff

Hi, Richard,

The first thing we would suggest is that you check your soil pH. Azaleas like soil on the acidic side. And mulch, mulch, mulch. See guidance above the QAs on this page.

Hope this helps!

I have five azaelas that are

By Susan Ward

I have five azaelas that are supposed to bloom spring through fall. I planted them in a circle two feet from the base of a small tree. They only get some to none dappled light throughout the day. They look good but they are no longer blooming. I fed them with fertilizer for blooms and added Epsom salts. No blooms! They have only been planted three weeks. Will the blooms come back or do I need to move them so they can get more sun? They are on the east side of my house, but there are many tall oak trees that bring mostly shade to the area.

Hi, Susan, Spring-to-fall

By Almanac Staff

Hi, Susan,

Spring-to-fall bloom seldom means continuous bloom, at least regarding azaleas; it means repeat bloom. After blooming in spring, the plants rest, produce new buds, and put on another show.

Hello, i planted my little

By jamey

Hello, i planted my little girard's rose azalea about 3 feet away from my home foundation and its facing east/south but the south way has a HUGE tree from the next door yard. im in zone 5 and i think i have clay ish type soil. i did not do anything to the soil before planting but add some organic compost, and a half tea spon of special fertilzer for azaleas and rohdies, but put it where the roots dont touch it. well its bee about 2 weeks and all the pretty pink flowers are all on the ground and have fallen off the plant. At this point the leaves seem to still look green and healthy. i did not add mulch around it because with the huge tree next door i was worried it might be in too much shade and the ground too wet...any thoughts or ideas would be great!! can i upload pictures here?? Wasnt sure how that works thanks

The Girard's Rose azalea

By Almanac Staff

The Girard's Rose azalea usually blooms April/May. The dropping of flowers is normal. Azaleas like acidic well-draining soil. Add used coffee grounds to the soil around the bush to make the soil more acidic and we suggest that you add some mulch before the weather gets hot.

I bought Azalea Mary Poppins

By Julie GB Lewis

I bought Azalea Mary Poppins about 4 years ago as a very small plant. It is in a patio pot and has been growing well. It looks extremely healthy - masses of leaves but no flowers. I have another azalea right next to it in the same conditions - and that one is overloaded with blooms. At first I thought it was because I had overfertilised it - so have not added any fertiliser for the last 3 years. I do make sure they are both well watered. Do you have any idea why I am not getting flowers?

Your azalea needs acidic

By Almanac Staff

Your azalea needs acidic well-drained soil (it does not like “wet feet”) and part shade. Add sulfur or iron sulfate to the soil if needed to lower the pH.

I have 4 azaleas plants and

By Tshencho Dolma

I have 4 azaleas plants and one it flowered the first year n now only branches coming out n not flowering. What can i do to bring it back? rest 3 plants doing ok.

I have a small red azalea

By ann schultz

I have a small red azalea that I planted last year. It was fine last year but this year it looks like something is eating it. Some of the branches are brown with dry brown unopened blooms. Other branches/blooms look normal except the blooms have holes in them. We have very acidic soil but it is clay.

Dry buds suggests botrytis.

By Almanac Staff

Dry buds suggests botrytis. Are you watering from overhead? Be sure to water at the base. Or, it could be an insect issue called thrips. They can be controlled by spraying the developing buds with Sevin and again 10 days later. We suggest you bring a sample to your cooperative extension or plant nursery for a diagnosis.

I have a azalea I want

By LindaSims

I have a azalea I want planted in the north east section of the garden under a deador cedar, but it is blooming now,
would that cause a problem? Im not living in the states, I live in British Columbia

You can transplant azaleas in

By Almanac Staff

You can transplant azaleas in early fall when the weather is relatively cool. If you must transplant in warm weather, choose an overcast day, or a day or so after it has rained (which cools the soil), or earlier or later in the day. The main challenge with transplanting azaleas is to get all of the roots so very wide (versus deep) to get every root to reduce the stress on the plant.

I have a very full potted

By Judy Graske

I have a very full potted pink Azalea plant it had pink flowers on it but now is not blooming. I live in Chicagoland and was wondering if I should bring it in for th winter. Please advise.

A potted azalea, especially a

By Almanac Staff

A potted azalea, especially a florist pot, probably won't survive freezing temperatures. You can try putting the pots in a cool place such as a cellar for the winter. Check plants throughout the winter and water thoroughly whenever the soil is dry. Do not fertilize. You do not want this type of plant indoors. The air is too warm and the humidity too low. Bring them back outside as freezing temperatures go away.

my husband and i own a

By stacey sinclair

my husband and i own a landscaping company. in early july we dug nandinas and camillias out of 2 beds at the end of a clients sloping driveway. we put 3 3gal high quality azaleas from a local nursery in each bed. it rained every day for almost a month. a week after the rain stopped the 3 in the right bed are brown. any ideas as to what happened?

Do both beds have the same

By Almanac Staff

Do both beds have the same amount of sun? Do both beds have good drainage? It sounds like one bed may have gotten more soaked from the rain than the other.

Our azaleas are on the East

By James H Rogers

Our azaleas are on the East side of our house and have been fine for eight years now. These are encore azaleas. Recently they appear to be dying on the under side of the plants. They look great from the top but when you pull the branches aside, the leaves are dead.

If you haven't fertilized the

By Almanac Staff

If you haven't fertilized the plants for a while apply a liquid fertilizer directly to the foliage and roots. Also make sure that your soil is acidic. Light pruning after they bloom next spring will stimulate growth and flowering.

i have 3 tiny tiny azaleas i

By cynthia talbot

i have 3 tiny tiny azaleas i bought from cottage farms,im having so many issues, i finally just stuck them in the garden i have going down my driveway, they will get ALOT of sun from spring to mid july,then they will only get afternoon/evening sun..they r starting to show signs of doing better, but its late july now. are they going to be ok with that amount of sun next yr?they have only been in the ground since july 18 2013..and i have white marble rocks in that garden,r they going to be ok with that?

Azaleas prefer filtered

By Almanac Staff

Azaleas prefer filtered sunlight. Ideally, they get dappled sun in the summer with little or no early morning sun in the winter.  They need sun but not intense, afternoon sun. Perhaps the most important factor is soil preparation. Did you do a soil test before planting? Soil needs have a pH of 4.5 to 6.0--and be moist, well-drained, and well-aerated. Many people find that they need to add amendments that make the soil more acidic. Soil tests are often available for free or a small charge from your local cooperative extension services. The test will tell you what you need to adjust. Fifty percent of the planting medium should be organic material. Finally, azaleas prefer to be set in a place protected from wind. They thrive on the north side of a building or the east side. 
 

I found the information very

By Shirley Barnes

I found the information very helpful. Thank you

I have 5 azalea plants in an

By Mary Kalos

I have 5 azalea plants in an outside gardens surrounding a statue. They seem to be doing well, but the leaves are beginning to turn yellow. Is this natural or is something wrong?

If some leaves are turning

By Almanac Staff

If some leaves are turning yellow, do not worry. If most of the leaves are turning yellow, this is often a cue of nitrogen-deficiency. They'll need fertilization. Also, weather can be a factor. These plants not like wet or very dry soils or full sun locations.

My azalea is potted on a

By Anonymouspat

My azalea is potted on a partial covered patio. I have very few leaves and after new leaves appear they start turning black at tips and die off about halfway . Is my soil not acidic enough or too much water. Plant is brought in during winter months

One possibility is soil fungi

By Almanac Staff

One possibility is soil fungi (Pythium and/or Phytophthora) which happens with azaleas in poorly drained or wet soil. Make sure the root ball is dried out--and the roots aren't mushy and rotting. Prune out affected areas, and spray with a copper based fungicide.

I have three azaleas, two are

By Mer

I have three azaleas, two are fine but one is in an area that is getting closer to full sun than I intended, I live in zone 6 am I going to fry my lil guy?

Azaleas grow best in dappled

By Almanac Staff

Azaleas grow best in dappled sun in the summer with little or no early morning sun in the winter. They like filtered sunlight. However, some varieties, particularly deciduous azaleas, can handle more sun if they are given enough water. You will probably find that an azalea grown in full sun will have shorter stems, and may have more blooms which will not last as long, and which may fade in a few days. If the leaves show signs of being burned by the sun (round brown spots on the leaf tips and edges) or the blooms fade quickly, you may need to move the plant to a little more shade.

I planted four azaelas in a

By I think my azaelas are dead

I planted four azaelas in a mostly full sun area of my yard. They bloomed last year and I didn't cover them over the winter. We also had a lot of rain and they were sitting in some puddles before it got nice outside. I tried to fertilize them this spring but there is no new growth and the leaves are all red and falling off. Do you think that they are still alive or should I just dig them out?

I have several azaleas and

By a&k's nonnie

I have several azaleas and they seem to like where they are planted and bloom profusely...then all the flowers die off at once. Is there a way other than picking off each flower by hand to remove the dead flowers?? I have resorted to paying my grandchildren a penny a flower for removal. The kids are quite young and get bored with this project easily....thanks for any advice.

Can I plant azaleas in a

By Manuel frias

Can I plant azaleas in a shaded are in Arizona, will they tolerate the summer heat and flower next spring?

Azaleas do require partial

By Almanac Staff

Azaleas do require partial sun, so if you plant in an area that gets morning sun and afternoon shade, that would be best. Also, azaleas are acidic soil loving plants. You will need to amend the alkaline desert soil with composted cow manure and peat mixed with equal portions of your soil. And for best results, look for a variety that thrives in your zone: http://www.almanac.com/content/plant-hardiness-zones

I have a full sun huge back

By newbys

I have a full sun huge back yard. I have azaleas planted and some moss. I wanted some ideas of plants that bloom at least all summer or longer and comes back with not a lot of effort. I really would like to have 2 butterfly trees I saw on tv but nobody around here seems to know what I am talking about but they have bushes but they look nothing like the trees. So if there is any ideas and if you know where to get the trees pleas tell me?

Ask your local garden centers

By Almanac Staff

Ask your local garden centers about the "Butterfly Bush" or "Buddleia davidii" varieties for your area. It is a nice choice that blooms from summer through autumn. See more about how to plant, grow, and care for this plant: http://www.almanac.com/plant/butterfly-bush

I just bought and planted 12

By newbys

I just bought and planted 12 azaleas and I. Believe they are planted rite, this is my first time. But the second noight they was in the ground we noticed that we had 3 night of 30degree wheather coming and this the night after a heavy rain. My husband and I covered them all with trash bags and when the morning sun rose I uncovered them. I noticed since some of the blooms was wet when covered that the was frozen but otherwise look good. Is covering them what I should be doing for the next 2 nights? And will the frozen pedals be ok or has that damaged the plant? And also if this is all done rite will they bloom all summer this year, there are lots of fresh greens and new blooms as of now? Please help

Covering your plants

By Almanac Staff

Covering your plants overnight to protect them from frost is a good practice. Using trash bags to protect the plants from freeze damage is OK, although it can trap moisture inside that might then freeze on the plant. With trash bags or other plastic, be sure to remove it, as you have done, in the morning before the sun warms the air, or it will get too hot inside the bag and will damage the plant. If you can, it is better to use fabric, such as blankets or sheets, or row covers or burlap (the last two are available at garden nurseries), all of which allow air to circulate but still help to protect the plant from cold.

The frozen petals indicate that those particular flowers are damaged; damaged flower buds may turn brown. If the other buds look OK, then those should bloom fine, and more buds may develop later. The plant itself should be OK; if you see dead, brown or black areas or splitting along some branches, you can prune the dead branches back to healthy wood, just after the plant has finished blooming.

Bloom time depends on the type of azalea you have, as well as your location and growing conditions. Some are early bloomers (such as in February and March), others bloom mid-season (such as April through June), and others are late-bloomers (such as in July through September). You might check with the place where you bought your azaleas to find out what type you have and its normal bloom period.

I received an azalea plant

By Karen Meck

I received an azalea plant from my mother-in-laws funeral about 3 weeks ago, (Nov.28th). I have kept it moist and inside, (we live in N.Ill.).
My problem is that every time I touch it the leaves fall off. What is happening, and what can I do to fix it? How can I check the acidity of the soil?

The problem might be that

By Almanac Staff

The problem might be that your plant is in shock, from transporting it to its new home. Or, it could be receiving too much water, not enough light, and/or be suffering from cold/hot drafts.

For shock, provide the best conditions possible (see below), and wait for the plant to recover--it usually will.

You might have a florist azalea, which are bred as houseplants. These can exhibit leaf drop if they receive too much water (or too little, which doesn't seem to be the case here). With too much water, the roots will begin to rot, which causes leaves to drop. Be sure that you are letting the water drain between waterings; remove any foil or other wrapping that's around the pot, so that it is not sitting in a puddle of water. Keep the soil evenly moist, but not saturated.

Also be sure that the plant is away from cold or hot drafts, which can also stress the plant. A cool (not cold), bright location in indirect light is ideal in winter, away from heat registers and drafty windows/doors. Mist the plant every so often to maintain a humid environment.

For more information about indoor azalea care, see this advice from the Azalea Society of America:

http://www.azaleas.org/newsite/faq.php#flo

To check the acidity of the soil, you can purchase a soil pH kit from a local nursery. Aim for a soil pH of about 5.0 to 5.5.

Hope this helps!

I have an Azalea bush that I

By Donna Marie

I have an Azalea bush that I got last Easter ... it bloomed until November in the pot on the sunporch and I didn't transplant it to the garden. Now it's dead and won't bloom. I still have it in the pot. One branch is starting to come back and has green leaves. Should I plant it in the ground and see what happens???

Hi i mite be months late but

By tseten bhutia

Hi i mite be months late but i had the same situation... after a major earthquake hit our place my aunt moved out of her place and left her azalea, wen i took it in it was just a dry stem with not a single.leaf..i am not a professional nor do i have much experien e in gardening, my mom used to do it after she pased i am tryng to learn... anyways back to the topic i replanted it...and now.it bears white flowers... :))) i am sure by now yours must have revived and in full bloom... enjoy :)))

If it was a florist azalea,

By Almanac Staff

If it was a florist azalea, first make sure that it is hardy in your area before planting outside. You can check the Azalea Society of America web site for more information:
http://www.azaleas.org/newsite/faq.php#flo
As for its dying back and then showing signs of life, I’d say that it would be worth continuing to care for it and see what happens. Perhaps, though, allow it to leaf out a bit more before stressing the plant and putting it outside or repotting (if needed). Keep in mind that some azaleas are deciduous and will go dormant over winter. If this is the case with your azalea, it will come back totally, given proper care, for the growing season. If some of the plant has been damaged, and it is clear that certain stems have died, then you can prune them back to the base (trunk), or to the first healthy-looking bud along on the stem. If there is any green in the inside of the twig, just under the bark, then there is still life there.
Azaleas prefer moderate temperatures (although there are some exceptions), and moist but not wet soil. It’s possible that the heat from a sunporch may have stressed it, if it was a variety that does not tolerate heat well (above 86F for a prolonged period can damage them). Many prefer at least partial shade. Here is more information on the ideal conditions for azaleas:
http://www.azaleas.org/index.pl/azculture.html
If it is OK for the azalea to be planted outdoors, and it is already hot in your area, then choose a cloudy day, after a rain, or in early morning/late evening, to avoid stressing the plant as much.
As another option, bring your azalea to a knowledgeable nursery for them to make a diagnosis. It’s possible that it is only just breaking winter dormancy and all will be well. Hope this helps!

I bought two azalias at a

By Robin Morehouse

I bought two azalias at a grocery store. The blooms are gone and I was wondering when it is OK to transplant them outside in the Seattle area? How deep do their roots go? and How much sun is too much sun?

If it was a florist azalea,

By Almanac Staff

If it was a florist azalea, first make sure that it is hardy in your area before planting outside. You can check the Azalea Society of America web site for more information:
http://www.azaleas.org/newsite/faq.php#flo

I have two small Azalea

By Lisa Gibson

I have two small Azalea bushes that flowered the first year(two years ago). Each year since the blooms and flowers have decreased. what can I do to bring them back? I am not a professional gardener just someone who likes a nice looking yard.

One issue you may have is

By Almanac Staff

One issue you may have is poor soil. Azaleas thrive in acidic soil that is ideally pH 4.5–5.5. Azaleas also do not tolerate deep planting, so make sure they are shallow planted. They require lots of moisture, so remember to water your plants regularly. You can also try deadheading (removing the dead flowers from the plant), but be careful not to damage or remove young growth.
I hope this helps!

When is the best time to trim

By Donald Stine

When is the best time to trim Azaleas. They have gotten way too large. What is the best way to trim them back? How hard can I cut them Back?

Thanks Very much

The best time to prune

By Almanac Staff

The best time to prune azaleas is in the spring after flowering. The best way to trim azaleas is deadheading, which is cutting off dead flowers and branches and other damaged or diseased branches. You can also just cut off a few twigs from your plant. Usually azaleas need little pruning and they are only pruned to retain their shape, so I wouldn't cut them back too much. You don't want to damage too many flowers or young growths because then your plants will die.
Good luck!

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