This is the Q&A for the Yard and Garden show for July 31, 2020. Yard and Garden Live is a call-in radio show I do on KUTT 99.5 FM from 10-11:30 am, this is the last summer episode of the year. It can also be found on kutt995.com for online listening. If you missed a show or just want to read through the questions, I have written them all in my blog and will continue to do so throughout the season.
* New this year: Join us on September 11 & 18 for fall episodes!
I will put the Q&A from these shows here on the blog as well.
Guest Host: Katie Kreuser, Extension Educator in Cass County
1. The first question of the show was a listener who was wondering if Hops will grow well in Kansas?
A. It should do fine in northern to central Kansas, Katie isn’t sure about the southern part of the state. She said it grows well in the Kansas City area but too far south will not have enough sunlight for it to grow well. Katie also mentioned that to grow hops commercially, you should line up a buyer first because it needs to be used to make beer soon after harvest for best success.
2. How can you control crabgrass now?
A. Now is not the time for crabgrass control, it is too late. At this time of the year, any crabgrass that is growing in the yard will be large and mature. Crabgrass is an annual, weedy grass so it will die with the first frost. In the spring, around late April, use a crabgrass pre-emergence herbicide on the lawn. This could be reapplied in mid June to get season-long control against crabgrass. There are post-emergence herbicides for crabgrass, but will not be very effective on mature plants in August.
3. This caller has roses that are covered with green beetles. What are they and how can they be controlled?
A. These are likely Japanese beetles. You can use sevin or other insecticides. They will likely not kill the roses, but will make it look bad. Most of the damage for this year is likely already done. Look at the tree for more green beetles with copper-colored wings or elytra. If you don’t see many beetles, forego the spraying for this year. You can also use a bucket of soapy water and knock many of the beetles into the bucket to kill them. Go out in the evening when they are grouped up and you can get many at once.
4. A caller who is new to gardening was curious what types of plants can be added to a garden this time of the year? Can he plant tomatoes or cucumbers?
A. A fall garden would be great this time of year. Planting of a fall garden can be done until the middle of August. You can plant the spring, cool-season crops again in the fall and often be more successful than you were in the spring. Things like broccoli, cauliflower, cabbage, Brussels sprouts, carrots, radish, lettuce, and spinach. It is too late in the year for the warm season crops like tomatoes, peppers, or cucumbers. These plants are more sensitive to colder temperatures and wouldn’t have enough time to mature prior to the first frost.
5. This caller has crabgrass in his lawn. He will use a pre-emergence herbicide in the spring to control that. He is wondering, though, when he should overseed the lawn to fill in the bare spots?
A. Late August through mid-September is best. If you are having troubles with weeds in the lawn, you can use a mesotrione product, such as Tenacity, at seeding. This will help reduce the crabgrass and other weeds when trying to get the new turf established.
6. A caller has something that is digging 4-5 inch holes in the yard with no tunnels. What is causing that?
A. This could be from a number of different wildlife animals. It would be best to send pictures to know for sure. I would have to contact a wildlife expert for diagnosis.
7. The final question of the show was from a caller who has a vine coming up in her yard, it is not bindweed. The plant has heart-shaped leaves with dark green leaves and white colored veins. What is it?
A. This is honeyvine milkweed. It can easily be pulled from the garden. Pull it when it is small, before it vines up on other plants. You could also use the ‘Glove of Death’ method. This is when you wear a chemical-resistant glove and then put a cloth glove over that. Then, dip a few fingers of the gloved hand into Glyphosate and rub those fingers along the stem and leaves of the vine to kill it.
*Reference to commercial products or trade names does not imply endorsement by Nebraska Extension or bias against those not mentioned.