Ask an Expert - Featured Questions

When is the best time of year to aerate my yard? My yard is Kentucky bluegrass. I live in Eugene, Oregon.

I have an old pile of wood chips from a pruned willow tree and I wondered if I could rototill them into my garden soil to add mulch?

I had always been told that rhubarb leaves are extremely toxic, but my research has confused that notion! Some sources say that it is hardly toxic, while others say it is lethal. Do you know how toxic rhubarb leaves actually are?

I am looking for a vegetable garden fertilizer that is dog friendly. My dogs eat everything outside. Could you recommend a garden fertilizer that will not hurt my dogs.

I am new to the area and we bought a house in the city with a water feature that has attracted loud frogs. What might I do to get rid of them this as they are disturbing our needed sleep. 

What is the best way to treat a very large amount of mold that has accumulated on my walls and windows of my apartment?

What are the guidelines for increasing the amount of moss on my property? Is it possible to move it from one place to another? How does one go about doing this?

We have a lot of moss and we are going to spray our courtyard and deck. Can we spray our maple tree trunk? It is getting covered with moss? Will it hurt other plants?

My neighborhood in NE Portland is full of tall trees which make my yard very shady. My grass really suffers. What type of grass seed should I try to make a healthier lawn?

Hello: I have an old (10+ years) grape vine, which has not been pruned in at least six to eight years. It produces, but of course its several branches are very long. Would I be wise to prune it back severely, to the first branching of the vine for best future health and production? I'm...