Plant Diseases
The Most Common Problem
Botrytis. is the most common fungus (pictured on this geranium) in the world.
It takes many different forms from a simple gray mould on geranium flowers to blotching black spots on peonies. It is Mother Nature’s first line of attack in breaking down weakened flower tissue for recycling. No matter whether you want that flower bud or leaf – botrytis is the first wave of recycling. This article describes common and effective non-chemical controls.
Rose Problems
Powdery mildew. You’ve likely seen it as a light dusting of white on leaves that lead to twisting and deformed leaves. The tips of growing rose canes twirl and are deformed. Brown-eyed susan and lilac leaves are routinely dusted with white before the season is over.
Black spot on your roses Here’s the scoop on how to control this problem using natural methods.
Another rose problem, more commonly seen on the west coast is downy mildew A problem associated with cool humidity, this is rarely a problem on the east coast.
Questions and Answers
My variegated plant leaves revert to green? Is this a disease?
Blackened leaves may signal Fireblight on this Asian Pear.
The leaves are falling from my crab apple and there are hard nodules on the bark?
Got a Question about Plant Disease
If you have a question about plant disease, this is a good place to ask it.
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What Other Visitors Have Asked About Plant Disease
Click below to see questions from other visitors to this page...
impatiens wilting and dying after transplanting I grow my own impatiens from seed--for 15 years. I start them in the house and then put them in four packs in my greenhouse. I've never had trouble with ...
lynchnis (sp) problems I have a maltese cross from last year and a rose campion that I planted this spring - they both have the same problem: Some of the stems are turning brown ...
Black Eyed Susan My Blacked Eyed Susan have brown spots on the lower leaves. This is the second year this has happened. It does not affect the flowers but is unsightly....
white powedery substance on house plant leaves
what is the white powdery substance that forms on the leaves of house plants?
Doug says - check out this page on powdery mildew
powdery mildew on my akebia vine on leaves and growing shoots Every year after a vigorous start and after flowering my akebia vine gets attacked by mildew and leaves drop off. I have tried spraying sachets of fungistat ...
Still have questions about plant diseases?