I have white crystally/powdery stuff growing on my plants.?

Its called Powdery Mildew. Its a fungus .... You can get rid of it by mixing up some baking soda in water 4 - 5 tablesppoons in a gallon of water, thoughly dissolving it , and then spray it on the affected plants.. Its usually caused by wet conditions . When you water your plants , try not to get the foliage wet. Water in the morning, so excess water can dry up ; avoid watering late afternoon / evening .

Run a search on " Powdery Mildew " for more advise, or stop at your local garden center ....

It's called mealybug. It's a small white cotton stuff which is an insect all clustered at the base of the leaves, under the leaves, and on the stems. Their are many insecticides that should rid this problem. But you do have to make sure you spray the underside of the leaves as well as the rest of the plant. If it's not too badly infested I would get a soft cloth or cotton and wipe off all that you see with rubbing alcohol, then spray the plant. You could also mix a little dish soap with water and spray it, if you don't want to use insecticides.

It sounds to me like you have a mealybug infestation. To check if these are mealybugs, pick some of the white stuff off the plant and mush it between your fingers. If it is orange, pink, or another color and it is juicy, it is in fact mealybugs!

A fungicide wouldn't work because mealybugs aren't a fungus.

If you've applied an insecticide, it may not have worked because it wasn't the right one. What you need to get is a systemic insecticide (look for the active ingredient- imidaclporid when shopping for one). A systemic insecticide will be taken up by the plant and translocated throughout so when the mealybug or any other bug takes a bite of your plant, it will ingest some of the poison and die!

Mealybugs tend to aggregate close to the bases of leaves or in the nooks and crannys of plants, because it sort of protects them.

You may also want to try wiping them off yourself until the chemical can be taken up in to the plant.

Just "great." 5 replies and 5 different opinions. In my case took plant outside & sprayed wet with Dawn dish soap. Looked great for 2 weeks and now the white stuff has returned. Time for some insect spray.

White fly, get spray at the store, use it , you mihght need to cut it back some if really bad, if you do clean shears with rubbing alcohol so you dont spread it.

Get the spray for Roses, green can yellow cap, its aerosol works great Think its made by ORtho

White Stuff On Plants

it sounds like a mold. can you put on gloves and wash it off? I'd try manually getting rid of it before using those products