Powdery Mildew

Phlox drummondi

I have a well established patch of pink bee balm (Monarda) and wanted to add some other colors of beebalm to grow among them. Will they cross pollinate and all end up the same color? Should I keep the colors separate?

My Bee Balm leaves are yellow. Could it be due to all the rain we had this spring?

Why do my begonia plants die every winter? I keep them in containers and move them indoors when cold weather sets in. Should I set them in a sunny location?

Boltonia asteroides

Syringa vulgaris

I have tall phlox and Lysimachia clethroides growing in my perennial garden, and they’re starting to take over the beds. I keep digging them up to no avail.

My creeping phlox looks fine on top but it’s dry underneath. I have lots of leaves but very few flowers.

Every spring my creeping phlox looks great. Then as the flowers fade the foliage starts to decline and the plant looks bad. Any suggestions?

Phlox subulata

Dahlia hybrids

Phlox paniculata

Are there any good homemade remedies for controlling bugs and diseases on roses?

I have a honeysuckle bush with powdery mildew. It is in full sun. What do I do? It was like this last year also.

My garden consists of a balcony on the north side with a little bit of eastern exposure with a little morning sun. I've had so much trouble with bugs and mildew. I've been dumping plants all summer and buying new ones. Even begonias and impatiens didn't do well. First it was aphids, then mildew, then white flies. I did so much spraying with all kinds of things including insecticide. The bugs finally seem to be gone but the plants look terrible.  The leaves have white stuff on them and some have black.

Rosa x hybrida

Aster novae-angliae

Aster novi-belgii

I have a Center Glow ninebark bush that is going into its second year. It developed powdery mildew on some of the leaves. It was originally located on the south side of the house next to a retaining wall. I have since moved it more into the open. Is this enough to control the problem?

I am having a problem with my palm tree.  It has developed a white powdery substance on 50 percent of the leaves.

My phlox are covered with this white stuff and the leaves are starting to turn yellow and brown. What should I do?

Every summer I take my poinsettias outside.  Within 2-3 weeks of bringing them indoors for winter a white powder appears on the leaves. I am able to get them to bloom but the leaves eventually yellow and drop off.

Last summer many of my plants and shrubs were attacked by powdery mildew.  We have pets and do not want to use chemicals.

I heard you could use baking soda to control powdery mildew.  Is this true?  If so, do you have the recommended rate?

My garden plants were covered with powdery mildew this summer. Can I spray something on them this fall to prevent problems next year?

This spring I planted two silver lace vines in two different locations on the south side of my house.  Both plants wilted, turned yellow and died.  Do you have any suggestions for a replacement?

Begonia x tuberhybrida

Verbena x hybrida

Begonia semperflorens-cultorum

Zinnia elegans