Ask Extension

Asked April 21, 2024, 7:48 PM EDT

Hi, please recommend a rhododendron that will only grow to 3 ft tall by 3 ft wide for the front of our townhouse in Columbia MD. There are existing rhod’s that are healthy in front of home so conditions are good for this bush. Thanks

Howard County Maryland

Why did my rhododendron die? #865339

Asked April 21, 2024, 6:24 PM EDT

This rhododendron plant is on the front of the house, facing southwest in full sun. It was apparently stable last summer; leaves began to curl in the fall but stayed green all winter; then turned brown when warm weather came. It is one of three plants, all 30+ years old, in the same bed that have died. I see no sign of insects on or under the leaves, and no sign of rot near the ground. Can I plant another azalea/rhododendron in the same spot? Should I treat the soil first? With what? Thank You!

Montgomery County Maryland

Planting tree where previous tree was just cut down #865336

Asked April 21, 2024, 5:54 PM EDT

I had a Norway Maple, about 14-15’ tall cut down recently. It was slowly dying and the arborist said it was due to sun scald. I want to plant a malus Red Baron in its place. Is that ok to do if I have someone grind down the stump?

If not, I have another location, on a slope, but it gets a lot of rain runoff from the roof. Would it be too wet?

Thank you!

Larimer County Colorado

nut trees #865333

Asked April 21, 2024, 5:21 PM EDT

what are the best pecan varietiesMaryland and walnut varieties to grow in maryland

Howard County Maryland

American Plum #865331

Asked April 21, 2024, 5:10 PM EDT

I would like to plant two american plums in my backyward along the fence. Can you please tell me how far from the fence they must be and also how closely I can plant them? This is a small yard that gets lots of tending and I will be able to trim them as needed. Thanks.

Baltimore City County Maryland

Pruning summer crush hydrangea #865330

Asked April 21, 2024, 4:59 PM EDT

I planted Summer Crush Hydrangeas in 5/19. Good blooms first 2 years nothing on 3 plants the last 2 years. I would really appreciate any tips to help blooming and the proper way to prune them and continue to get blooms throughout the summer. Many many thanks for your information and time,

Washington County Minnesota

Cover Crops #865329

Asked April 21, 2024, 4:56 PM EDT

What cover crop can I plant now in my backyard?

Baltimore City County Maryland

Evergreen tree allergies #865327

Asked April 21, 2024, 4:42 PM EDT

We planted two arborvitaes outside our fence for privacy. My son had a severe reaction to the pollen internally. What evergreen trees are hypoallergenic for columbus and available. Are hemlocks, canaan fir, white fir, or norway spruce hypoallergenic? I was looking for 5-6 feet, about 12 five gallon trees. Thank you

Delaware County Ohio

Plumeria in spring now on the deck #865325

Asked April 21, 2024, 4:36 PM EDT

Should I trim those two short green stalks that remained on this plumerua during the winter?

St. Mary's County Maryland

Culver's root queen of diamonds #865323

Asked April 21, 2024, 4:28 PM EDT

Hello there, I bought a couple of queen of diamonds plants before I knew about nativars. Is the plant sterile? And is Ruby slippers hydrangea sterile? I must try harder!

Cook County Illinois

Answered Questions

Loading ...