Hibiscus Shrubs: Black Leaves, Buds, And White Insects
Q: My hibiscus shrubs bloom from mid-summer thru fall. The buds and leaves have all turned black and they have white insects all over them.
A: Hibiscus whitefly is a common pest of outdoor hibiscus plants. The small white flies gather on the back of leaves and suck sap. The sap that cannot be digested is excreted and it falls on nearby buds and leaves. A sooty black mold grows on the sap (honeydew), causing the whole plant to be unattractive. The first way to control whiteflies is to spray the plant with a strong stream of water every three days. This will wash away many whiteflies and their eggs and will also get rid of the sooty mold. A systemic insecticide can be used as a last resort but I don’t like doing this because of the danger to pollinating insects.
-
Advertisement
-
Follow Walter
-
Advertisement
-
-
January calendar
January is typically the coldest winter month. Still, you can accomplish such garden tasks as sharpening...
Get The Checklist
-
-
-
name that plant
Post your puzzlers and help others with theirs.
Start Here
-
-
Trending Posts
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Want My Tea Olives To Fill In With Leaves At The Bottom
-
3
Soft Caress mahonia problems
-
4
Hellebore Black Death – Diagnosis
-
5
Asian Ambrosia Beetle – On Crapemyrtle
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Vole – Damage to Plants and Control
-
3
Dracaena surculosa blooming
-
4
How to Prune a Coral Bark Maple
-
5
Crapemyrtle – Which is the Right Way to Prune
-
-
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 Pine Pots Oak Mulch Pruning Watering Container Maple Compost Herbicide Birds Moisture Tomatoes Azalea Poison Pears Hydrangea Glyphosate Cherry Caterpillar Pests Roundup Irrigation Pre-Emergent Stone Pesticide Dogwood Peach Pine Straw Spider Greenhouse Magnolia Squash Beans Squirrels Poisonous Travel Lemon
-
Trending Posts
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Want My Tea Olives To Fill In With Leaves At The Bottom
-
3
Soft Caress mahonia problems
-
4
Hellebore Black Death – Diagnosis
-
5
Asian Ambrosia Beetle – On Crapemyrtle
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Vole – Damage to Plants and Control
-
3
Dracaena surculosa blooming
-
4
How to Prune a Coral Bark Maple
-
5
Crapemyrtle – Which is the Right Way to Prune
-
-
Advertisement
-
Walter’s Bookshelf
Browse and purchase gardening books by Walter Reeves, plus select titles by other authors.
View books -
Advertisement
-
-
name that plant
Post your puzzlers and help others with theirs.
Start Here
-
-
-
January calendar
January is typically the coldest winter month. Still, you can accomplish such garden tasks as sharpening...
Get The Checklist
-
-
Popular topics
Soil Spring Summer Seed Winter Fall Flowers Weed Fertilizer Disease Shade Temperature Pine Pots Oak Mulch Pruning Watering Container Maple Compost Herbicide Birds Moisture Tomatoes Azalea Poison Pears Hydrangea Glyphosate Cherry Caterpillar Pests Roundup Irrigation Pre-Emergent Stone Pesticide Dogwood Peach Pine Straw Spider Greenhouse Magnolia Squash Beans Squirrels Poisonous Travel Lemon
-
Advertisement
-
Trending Posts
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Want My Tea Olives To Fill In With Leaves At The Bottom
-
3
Soft Caress mahonia problems
-
4
Hellebore Black Death – Diagnosis
-
5
Asian Ambrosia Beetle – On Crapemyrtle
-
1
Aftercare for poinsettia, amaryllis and paperwhite narcissus plants
-
2
Vole – Damage to Plants and Control
-
3
Dracaena surculosa blooming
-
4
How to Prune a Coral Bark Maple
-
5
Crapemyrtle – Which is the Right Way to Prune
-
-
Walter’s Bookshelf
Browse and purchase gardening books by Walter Reeves, plus select titles by other authors.
View books -
-
January calendar
January is typically the coldest winter month. Still, you can accomplish such garden tasks as sharpening...
Get The Checklist
-
-
Popular topics
Soil Spring Summer Seed Winter Fall Flowers Weed Fertilizer Disease Shade Temperature Pine Pots Oak Mulch Pruning Watering Container Maple Compost Herbicide Birds Moisture Tomatoes Azalea Poison Pears Hydrangea Glyphosate Cherry Caterpillar Pests Roundup Irrigation Pre-Emergent Stone Pesticide Dogwood Peach Pine Straw Spider Greenhouse Magnolia Squash Beans Squirrels Poisonous Travel Lemon