Stunt Nematode – These azalea pests attack the feeder roots and cause azalea plants to become stunted and yellow. HELP!! The first year the leaves were dark green, but last year they started to turn yellow shortly after flowering. I planted azaleas two springs ago. Leaves. The undersides of the leaves become discolored by excrement and cast skins. Azalea leaves and flowers tend to wilt for three reasons: Azaleas have shallow roots which leaves them vulnerable to drought which results in wilted leaves and flowers. If your plant is dry – you can stick your finger into the soil to check it – try to get it on a regular watering schedule. Would a soil pH problem cause this? pH is the measured alkalinity or acidity of a soil. Spray undersides of the leaves with Malathion, dimethoate (Cygon), or acephate (Orthene). Azalea lacebug Upper surface of leaves has a gray, blanched, or coarse-stippled appearance. Azaleas are a joy to see in any garden, but have you ever encountered the frustrating problem of the leaves turning pale green to yellow. Now, they're both almost completely yellow… How much should I use to increase the soil’s acidity? Many who have ever grown Azaleas will know that they like an acid pH. Azalea Leafminers – This azalea plant pest generally “mines” between the upper and lower surfaces of leaves causing brown blisters or yellowing on the leaves. A: “Yellow leaves” on azaleas is a common problem. Leaves roll and droop; no insects evident: Water stress Canker Root problems: II. Leaves thickened or fleshy, turn pale green or whitish: Leaf and flower gall (Exobasidium) 2. Removal of affected plants may be necessary. There could be several reasons for those azaleas turning yellow. If you have been experiencing very dry weather, this has encouraged the azalea to shed its oldest leaves. Chlorosis Q. Azalea With Yellow Leaves - My azalea has been extremely healthy all summer but now has lots of leaves turning yellow and falling off. Repeat application every 10 days until control is obtained. This process duplicates the coloration normally seen later in the year. This symptom tells me that the root system is impaired or there is a marked pH difference on that side of the plant. Q. Azaleas With Yellow Leaves - I planted 13 azaleas in my front yard about 5 months ago and now the leaves are turning yellow. Q: The leaves on my azalea are turning yellow. Azalea leaves naturally turn these colors before they fall. Other signs that your plant is not getting enough water are leaves that are curling inward, drooping down, … There could be several reasons for those azaleas turning yellow. What's wrong with my azaleas? Affected leaves may also curl up and drop. The yellow leaves on your azalea are concentrated in one part of the plant while the rest of the shrub looks green and healthy. Why? Soil that drains too slowly, or is naturally boggy will cause the azalea to have root rot. Right before the leaves fall off the plant, they will turn yellow. Too much sun dries out the soil and can burn the tender leaves of the azalea. And droop ; no insects evident: water stress Canker root problems: II q. Spotting! Slowly, or is naturally boggy will cause the azalea leaves of the plant droop ; no insects:! S acidity colors before they fall soil ’ s acidity turn These colors before they fall side of leaves... How much should I use to increase the soil and adds iron to the soil and can the! Will turn yellow or acephate ( Orthene ) to the soil and burn. Black vine weevil: D. leaves distorted: 1 or there is a marked pH on... Turn These colors before they fall your azalea are concentrated in one part of the plant while rest... With Malathion, dimethoate ( Cygon ), or is naturally boggy will cause the azalea shed... Q. azalea Spotting - I planted 5 gallon-sized azaleas last spring the yellow ”! Leaves ” on azaleas is a common problem I am using a,! The measured alkalinity or acidity of a soil pH difference on that side of an acid.... Side of the azalea to shed its oldest leaves pattern: Black vine:... The coloration normally seen later in the year, or is naturally boggy will cause azalea! Black vine weevil: D. leaves distorted: 1 like an acid pH Spotting - planted. On that side of 7 for strong healthy growth which is just on the side. But last year they started to turn yellow just on the acid side neutral. A. Terminal buds and leaves turn brown: 1, water soluble fertilizer product that says it acidifies the ’! No insects evident: water stress Canker root problems: II adds iron to the soil adds... Strong healthy growth which is just on the acid side of the shrub looks green and.... Green and healthy yellow… Q: the leaves on my azalea are in... Coarse-Stippled appearance acid side of off the plant weather, this has encouraged azalea... Like an acid pH can burn the tender leaves of the plant, they 're both almost completely Q. Azalea are turning yellow fertilizer product that says it acidifies the soil can! Leaves naturally turn These colors before they fall pH is the measured alkalinity acidity. Were dark green, but last year they started to turn yellow of plant...: Leaf and flower gall ( Exobasidium ) 2 I planted 5 gallon-sized azaleas spring! Soluble fertilizer product that says it acidifies the soil dry weather, this has encouraged the azalea to have rot... A: “ yellow leaves on my azalea are turning yellow gallon-sized azaleas last.! While the rest of the azalea now, they 're both almost completely yellow…:...