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Don Kinzler


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Hortiscope: Insects cause of sap issue

Q. We have an old silver maple tree that we have trimmed three times in the past 15 years. The most recent trimming took place earlier this year. This summer, I noticed a lot of sap all over everything on my deck, which is underneath the tree. My husband says he’s seen it do this before, but I have not noticed it before and I am out on the deck more than he is.

INFORUM, 10/25/2012

Hortiscope: Take care of crabgrass problem in the spring

Q: I have a couple of questions related to fall lawn preparation. I have some large areas of crabgrass in my lawn, so I am wondering how I can get rid of it before winter hits. Should I apply Roundup on the plants and then reseed? Is there an easier way to deal with crabgrass?

NDSU Extension Service, 10/18/2012

Hortiscope: Watering, calcium both related to end rot

Q: I read your article about blossom end rot on tomatoes. All the articles I have read say to give the tomatoes some calcium. It does work, so the rot has nothing to do with watering. I figured a man in your job would know better than to say it is the watering.

INFORUM, 10/12/2012

Hortiscope: Get frost blanket for untended pumpkins

Q: I have large pumpkins and a ton of buttercup squash in the garden. We will be going on vacation, so I wonder what temperatures they will tolerate in our absence. Thanks for your time.

INFORUM, 10/05/2012

Hortiscope: Water less in fall

Q: I’m hoping you can help me. I received a huge cymbidium orchid plant that was on the downside of its blooming. There were seven or eight bulbs squeezed into a 7-inch pot.

INFORUM, 09/28/2012

Hortiscope: Check indoor plants for outdoor insects

Q: About a year ago, I received a peace lily. It has done surprisingly well, considering the various opinions I have received on how to keep it healthy. About a week ago, a caterpillar appeared on the underside of one of the leaves.

INFORUM, 09/21/2012

Hortiscope: Squirrels good indicator of nut ripeness

Q: I have two adult walnut trees in my yard that have green walnuts the size of golf balls. How do I know when the walnuts are ripe and ready to pick? What signs do I look for?

INFORUM, 09/14/2012

Hortiscope: Tomatoes cracking due to water pressure

Q: Can you tell me why my tomatoes crack? I water regularly and fertilize with tomato spikes. Otherwise, the plants look healthy. We had the same problem last year, so we changed the variety, but it didn’t help. I would appreciate if you could help me.

INFORUM, 09/07/2012

Hortiscope: Japanese beetle likely culprit

Q: I planted a hibiscus shrub that gets flowers the size of a dinner plate. I’ve had the plant for three years. This year, it is much bigger and loaded with buds. I was so excited until I noticed the buds are yellowing and something’s eating the leaves. The leaves look like lacy Swiss cheese.

INFORUM, 08/31/2012

Hortiscope: Saturated soil at root of birch problems

Q: Our 12-year-old weeping birch tree appears to have died because all the leaves have turned brown. Do you think it is a goner or should we wait to see if it revives next year? What do you think caused this? The leaves started turning brown early this summer.

INFORUM, 08/24/2012

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