Azalea Plants

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  1. Azaleas Leaves Curled and Brown, Why
  2. Azaela Bushes Have a Yellowish/Rust Color on the Top
  3. Azalea Bush Covered in a Greenish, Powdery Growth
  4. What do you feed Azaleas?
  5. Azalea disease
  6. Deadheading Azaleas
  7. Azalea Flower Damaged by Frost
Asked by billy g on March 26, 2012
Azaleas Leaves Curled and Brown, Why

Azalea leaves curled and brown, why?

ANSWERS
Heather
Certified GKH Gardening Expert

There are many things that can cause this, but I would look to see if there are pests on the leaves. Typically, these pests are very small and will appear as small specks on the bottom of the leaves.

Regardless, treat the plant with both a pesticide and fungicide. This will treat just about everything that could cause this. I personally like neem oil for this. It is both a pesticide and a fungicide and is also organic.

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Asked by ezcakes on March 31, 2012
Azaela Bushes Have a Yellowish/Rust Color on the Top

My older azalea bushes (19 yrs) have a yellowish/rust color on the top.

ANSWERS
Nikki
Certified GKH Gardening Expert

Your azalea may be suffering from rust disease. This article will help you with your rust problem: https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm

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ezcakes

it's not the branches they are fine, the leaves are the problem with yellow and rust color on top and black spores on the backs of them the new leaves are a nice bright shiny green as they should be, but there are not many new leaves
do you think it is missing a nuetrient of some sort?

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Asked by jeanie60 on April 4, 2012
Azalea Bush Covered in a Greenish, Powdery Growth

I have an old azalea bush that is covered in a greenish, powdery looking growth. Many of the limbs have sparse flower and leaf growth, and a few have healthy looking vegatation. I pruned most of the dead wood this winter. This bush has been beautiful in the past and I would like to save it. Should I prune it almost to the ground in an attempt to save it?

ANSWERS
Nikki
Certified GKH Gardening Expert

White powdery growth, or powdery mildew, on plants is generally associated with a fungal infection. Here is an article on treating this problem that you may find helpful: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm

If it's green colored and sort of flaky, you may be seeing lichen. It is not harmful to the plant, but typically a symptom of stress. This article will explain more about them: https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm

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Asked by lance on April 6, 2012
What Do You Feed Azaleas?

My neighbor just gave me some Azalea plants. What pH do they need to be kept healthy at?

ANSWERS
Nikki
Certified GKH Gardening Expert

Azaleas need acidic soil and any fertilizer that is given to the plant should be labeled as such. Many are actually specific to Azalea/Rhododendron plants. If you're unsure of your soil's pH, you can have a soil test done.

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Asked by RHTaylor on April 9, 2012
Azalea Disease

My azaleas bloomed this spring but the blooms died early and turned brown. The leaves have turned brown or rust colored.

ANSWERS
Nikki
Certified GKH Gardening Expert

Your azalea may be suffering from rust disease. This article will help you with your rust problem: https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm

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Asked by Anonymous on April 13, 2012
Deadheading Azaleas

I planted a small azalea plant. It was in bloom at the time. We are in central Florida, Lakeland to be exact. It is planted where it will be in shade part of the day. We did not test the soil, but a geranium does well there. The pretty pink blossoms have all become a rusty color and are dry. Should I deadhead them, and if so, where on the stem should they be deadheaded?

ANSWERS
Nikki
Certified GKH Gardening Expert

Wait after blooming has stopped before pruning your azaleas. This article may help you if you have not read it: https://www.gardeningknowhow.com/ornamental/shrubs/azalea/pruning-azaleas.htm

Also, the plant may have rust. This article will help you with your rust problem: https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm

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Asked by leojs on April 14, 2012
Azalea Flower Damaged by Frost

Azalea flower damaged by frost. Will it bloom again this year?

ANSWERS
Heather
Certified GKH Gardening Expert

Likely not. Some varieties can, but the majority only bloom once a year and if the blooms are damaged, they will not bloom again that year.

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