Rust

What is rust? This fungus affects a wide range of woody and herbaceous plants. Even though it rarely kills plants, it reduces a plant's health, vigor, and flower production.

How to Identify Rust

  • Look for yellow or white spots forming on the upper leaves of a plant.
  • Orange or yellow spots or streaks appear on the undersides of the leaves.
  • Within these spots that form are spores.
  • Usually leaf distortion and defoliation occur.

How to Control Rust

  • Remove all infected parts and destroy them. For bramble fruits, remove and destroy all the infected plants and replant the area with resistant varieties.
  • Clean away all debris in between plants to prevent rust from spreading.
  • Avoid splashing water onto the leaves, as this can help spread rust.

Prevention

  • Dust your plants with sulfur early in the season to prevent infection or to keep mild infections from spreading.
  • Space your plants properly to encourage good air circulation.
  • Avoid wetting the leaves when watering plants.
  • There are many effective rust fungicides you can try. Ask your local nursery for which products you should use.

Comments

Last year was given 5 plants

By Grannyxfive

Last year was given 5 plants from 5 different sources. I noticed spots so I removed all the leaves. They are filling out nicely now again. However 3 days ago noticed every leaf on both stalks on 1 plant have all drooped including new growth. One other plant has some drooping leaves as well but the rest are fine. I water in the evenings & have sprayed the plants with soap/H20 solution 2 times as I'm seeing spots again. Suggestions? Tampa, FL

  Rust thrives in wet

By Almanac Staff

 

Rust thrives in wet conditions, so do not overwater your plants. Also, make sure that you have good air circulation around the plants.

We suggest that you spray the plants with organic neem oil, found in most garden centers.

I have a plumeria plant and I

By Ron Keller

I have a plumeria plant and I live in Orlando, Fl. I am loosing my leaves to rust. In the article above, It states that I should remove the leaves and destroy them. I am new to caring for plants so forgive my dumb questions. Do I just strip the plant of all it's leaves? It's a small plant, it has about 15 leaves on it. Anytime I pull a leaf off, it oozes a milky white liquid...is that normal? Will stripping off all the leaves kill the plant or will it grow new ones fast? My apologies for my ignorance. Thanks for the help,

Ron

Hi Ron, Carefully remove the

By Almanac Staff

Hi Ron,

Carefully remove the infected leaves and throw them out with the trash. Instead of pulling the leaves off use clippers or scissors. Rust is common in the fall months. Normally the plant will go dormant and  will drop all its leaves for several weeks in the winter. When new leaves emerge in the spring the rust is usually gone.

 

What about on your lawn? I

By Roberto

What about on your lawn? I have rust on my lawn does anybody have any ideas.

Hi, Roberto, One of the main

By Almanac Staff

Hi, Roberto, One of the main reasons that rust develops is a low amount of nitrogen in the soil. Fertilize with a good organic fertilizer high in nitrogen to strengthen the lawn. Mowing the grass a little shorter and removing the clippings, plus watering in the morning will also help. --TOFA

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