Petunias – White Spots On The Petals
Q: I’m seeing petunias with white spots on the flower petals. There are no spots on the foliage.
A: It’s probably gray mold, Botrytis cinerea, a common disease of flower petals. If a petunia flower is kept constantly moist, the mold will turn the bloom into a gunky mess. But in typical summer weather, heat dries the fungus before it can go further than the initial infection. You can prevent it by spraying with chlorothalonil (Daconil) at planting.
-
Advertisement
-
Follow Walter
-
Advertisement
-
-
March calendar
The soil is starting to get warmer, so it is time to fertilizer your pansies. Now...
Get The Checklist
-
-
-
name that plant
Post your puzzlers and help others with theirs.
Start Here
-
-
Trending Posts
-
1
Colorful – Options Of Shrubs
-
2
Passionvine – Dermatitis (skin rash)
-
3
Corn seedlings come up white
-
4
Assessing Tree Health – The Doctor is IN!
-
5
Chickweed control failure and a better idea
-
1
Queen Anne`s Lace V.S. Giant Hogweed
-
2
To diagnose plant problems, follow the angles
-
3
Ginger and Turmeric – Cultivation
-
4
St Augustine Lawns – Waiting to Mow
-
5
Carpenter Bee Control – Bert’s Method
-
-
Walter’s Bookshelf
Browse and purchase gardening books by Walter Reeves, plus select titles by other authors.
View books -
Popular topics
Soil Spring Summer Seed Winter Fall Flowers Weed Fertilizer Disease Shade Temperature Pots Oak Pine Pruning Mulch Watering Container Maple Compost Birds Herbicide Tomatoes Azalea Moisture Poison Pears Hydrangea Glyphosate Caterpillar Pests Cherry Roundup Irrigation Pesticide Pre-Emergent Stone Dogwood Peach Spider Pine Straw Magnolia Greenhouse Squash Squirrels Travel Lemon Beans Japanese Maple