Q. I have been treating my thundercloud plums for an aphid infestation. We have been using neem oil and insecticidal soap once a week for about two to three weeks. Now, the trees are losing a significant number of leaves. Is this because the aphids drained the leaves of moisture and they have dried and…
Category: Northwest U.S. Gardeners
Gardening questions from WA, OR, ID, MT & WY
Dividing New Zealand Flax
Q. Dear Horticulture Guy; Several years ago, we planted three New Zealand Flax plants which have done very well. In fact, they have grown so large that they are now crowding the street, the adjacent plantings around them and they’re even crowding each other. How do we control them? Should they be divided, and if…
Corn Gluten herbicide for Lawn
Q. I am interested in using corn gluten on my lawn to prevent weeds from growing. Can you provide some info on this, including which form is best to use, where to buy it, and which weeds it prevents (does it work on bind weed?). Thanks. A. First off corn gluten does not work on…
Moss in Flower Beds
Q. We are new to gardening in Washington where we get moss in our flowerbeds. After raking and breaking it up, is it important also to pick it up since so much mulch or soil clings to it? Rae Ann Merrill – Gig Harbor A. Although moss is usually removed from lawns as well as…
Resprouting Pear Tree
Q. When we moved into our Lakewood/Steilacoom area home 5 years ago, we accidentally cut down a pear tree. The tree is growing back and needs to be trimmed/shaped. When is the best time of year to do this? I do not know what type of pear tree it is. Thank you for your help….