Cotton Seed Meal – Contaminated With Pesticides or GMO
Q: You recently wrote about using ground cotton seed as an organic fertilizer. But isn't cotton one of the most heavily pesticide-ridden crops in the USA? A: It's true that conventional cotton was onc
Q: What is the difference between a blackberry and a dewberry? A: They are both members of the Rubus genus, along with hundreds of other species. Dewberry is a trailing vine, not a high arching shrub like blackbe
Q: We have an arbor that is eight feet tall and sixteen feet long. We want a perennial vine with bright flowers that will attract hummingbirds and that will bloom a long time. Would a Madame Rosy trumpet creeper
Q: Over the past couple of years, foxes have multiplied and are now residing all over our neighborhood: under porches, under sheds, etc.. We find carcasses of their prey in our yard continually. What to do? A: Li
Orchid – Leaves on Stem (Keiki)
Q: Is my orchid having a baby or what? A: You have a keiki! This is a Hawaiian word meaning "child" or "baby". Yours isn't quite old enough to remove from the mother orchid. Keep yo
Crabapple – Pruning Above Trunk Damage
Q: My crabapple tree has a big rotten hole in the trunk where a limb broke off. The tree is about 2″ DBH and about 15-20 feet tall. Should we go ahead and cut the tree just below the hole? A: I think it wil
Q: I have searched the internet looking for a variety of raspberry plant that is seedless. Does such a variety exist? A: There are dozens of raspberry varieties on the market. Most are hybrids of the hundreds of
Q: After this year's rains, we have lovely moss lawn. Can you recommend a pre-emergent we could use that would be unfriendly to potential weed growth but not harm the moss? A: Pre-emergents are chemicals th
Japanese Knotweed (Polygonum) – Identification
Q: We have had this vine pop up all over the place on the side of our house. Any idea if it's friend or foe? A: FOE! Your plant is Japanese knotweed, Polygonum compactum, and it will quickly spread to unwan
Bermudagrass Mite – Identification
Q: Doing my research, I think this is bermuda mite damage. Am I correct? A: You are exactly correct! Bermudagrass mites attack the ends of bermudagrass stems and cause the classic brooming you see. The good news
Cryptomeria "Flowers" – Identification
Q: Can you tell me what these gray tips on my cryptomeria mean? Are they symptoms of disease? A: The gray things are the "male" flowers, which once gave pollen to the round brown cones. The gray ones
Amaryllis – Needs Light to Bloom
Q: For the past two holiday seasons I’ve received amaryllis bulbs. After the two bloomed last January, I cut off the stems and placed them in a metal cabinet in the garage. I brought them back inside about early
Q: I read that dried tobacco is good to keep pests away from various other plants. I assumed the articles were referring to regular tobacco but I have discovered that there is a flowering tobacco grown as a decor
Cold Damage – Wait To Determine
Q: My mock orange plants are a bit brown after the big freeze. What should I do now, if anything? A: (written after 6 degree cold in 2014) All you can do is wait. On several shrubs (Indica azalea, pittosporum, fa
Blueberry – Best Planting Tips
Q: My neighbor is giving me fifteen of her blueberry bushes. I’m moving them from a partial shade area to a full sun area. When is the best time to move them? A: Now is a great time! I have tips for successful s
Ferns – Pre-emergent to Control Weeds
Q: I have assorted native ferns in my landscape. It's beautiful until June when weeds start to overgrow them. Can I put down pre-emergent weed control without hurting the ferns? A: I don't think pre-e
Q: I plan to buy two sixty-five gallon rain barrels to collect spring rainwater. In July when everything is dry, I will use it to water my fruit trees. How can I keep the water from becoming stagnant? A: Add 1/8
Q: I have tulip bulbs in big pots on my deck and patio. Do you think the bulbs, if frozen, will bloom in the spring? A: Tulips come through the winter unscathed in Minnesota, where the ground freezes solid in win
Timber Bamboo – Not Cold Hardy
Q: This spring, I intend to plant several giant timber bamboo plants. What kind of spacing do you recommend for planting this clumping bamboo? I read online that this type of bamboo grows in zones 8-10. Adam A.,
Q: We grew a lemon tree from a seed, it’s a bush now but it has not bloomed. Does it take more than one plant to produce fruit? A: Some citrus trees won't bloom until they get pretty big. My guess is that
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