How to Plant, Grow, and Care for Salvia Flowers
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All salvias do best in full sun (6-8 hours of sunlight per day) and well-drained soil. Many varieties (typically those with light-colored flowers) will also do well in part-shade, but flowering will be reduced.
When to Plant Salvia
- Direct-sow salvia seed outdoors after all danger of frost has passed in the spring. See local frost dates.
How to Plant Salvia
- Loosen the soil to a depth of 12 inches, removing any large stones or roots. Mix in a 3-inch layer of compost to provide nutrients.
- If planting in a container, add some grit to the compost to improve drainage and feed in spring. Plants grown in a garden soil don’t need feeding.
- Dig a hole twice the diameter of the container the plant is in.
- Remove the plant from its container and place it in the hole so the top of the root ball is level with the soil surface.
- Space plants 1 to 3 feet apart, depending on the variety.
- Carefully fill in around the plant and firm the soil gently.
- Water thoroughly.
- Add a 2-inch layer of mulch around the plant to retain moisture and control weeds.
- Water plants during the summer if rainfall is less than 1 inch per week. Salvia does not like excessive summer irrigation.
- Salvia really doesn’t need feeding during the season.
- To encourage continuous blooms throughout the season, deadhead spent flowers periodically.
- At the end of the season, leave flowers on plants to encourage reseeding (and to feed the birds).
- Some develop woody lower stems with age; feel free to prune this.
- After the first killing frost, cut stems back to an inch or two above soil line.
- Divide perennial salvias every few years. The best time to divide is in early spring before new growth begins. Just lift, divide into clumps, and replant.
- Every spring, apply a new think layer of compost, and mulch again.
Propagating Salvia
For the adventurous gardener, salvia cuttings can be taken in the spring or early fall.
Some salvias often self-propagate, so you might find seedlings you can use in other parts of your landscape!
Before flower buds have developed, take cuttings (remove stems) from vegetative (non-flowering) branches that are about 3 inches long. Remove the lower leaves and trim each cutting just below a node.
Insert cuttings into a pot of pre-watered compost. Cover the pot with a clear plastic bag—try to avoid the bag touching the foliage.
Place cuttings in a cool greenhouse and put up shading to prevent scorching from strong sunlight. After three weeks, cuttings should be ready to pot on.
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How do I get my Salvia to stand up straight. They were straight up last week and this week they are falling to the sides.
There are a number of reasons that salvias will flop over. When salvia plants get too much water, are over-fertilized, or do not get enough sun it can cause blooms to fall to the ground.
As the summer progresses, humid conditions can also cause this issue. It can also happen after flowering or if blooms become too heavy.
You can consider cutting it back to the bottom of the plant, just above ground level. Plants will regrow a fresh set of leaves and the next round of blooms.
I just planted small salvia plants. How much do they grow in one season? How long until maturity?
It all depends on variety, as salvias will grow anywhere from 18 inches to 5 feet tall. Plants will reach maturity in the first season.
In spring when can we expect new growth to come up?
Hi Renee, It depends on the variety of salvia and the climate in which you live. For many folks, salvia emerges mid-May and cues the spring-into-summer transition!
This is my first experience with growing salvia. How do I get my salvia to stand straight up? As it regrows each spring the stems stand straight then fall over onto the ground.
FA wrote: After the first killing frost, cut stems back to an inch or two above soil line.
Divide perennial salvias every few years. The best time to divide is in early spring before new growth begins. Just lift, divide into clumps, and replant.
Every spring, apply a new think layer of compost, and mulch again.
How do you know what type of sage you have?
There are quite a few varieties of salvia out there, and many look very similar! Generally, the leaf shape, flower color and shape, and the size of the plant are the things that set different varieties apart. If you take a stroll through a local garden center or even look at varieties online, you might find one that closely matches your own. But unless it’s a very obvious variety, it will be hard to nail down exactly which one you have!
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