Gardening Q & A

Read our Q & A postings answering common Colorado gardening questions here. Keith Funk is handling these this year. You can also hear him and fellow Wise Guy, Jim Borland, on the Garden Wise Radio Show on Legends 810AM, every Saturday morning from 7-9.

Special thanks to Kelly Grummons for thoughtfully answering these questions for many years.

Have gardening questions? Click here to send us your question on our contact form. Use our search window below to find Colorado gardening questions & topics.

Apr 4
1 min

When should grub killer be applied to control Japanese Beetles?

By Keith Funk A: April and May are excellent months for controlling Japanese Beetle grubs that overwintered from last fall. My personal...

Apr 4
1 min

When and how often should I feed my perennials?

By Keith Funk A: My first application of plant food on my perennials is in early April. I prefer a granular fertilizer with an analysis...

Apr 4
1 min

Are there any flowers I can plant outside in April for some extra spring color?

By Keith Funk A: Yes. There are several cold-tolerant annuals and perennials that will flower beautifully during our cool/cold spring...

Apr 4
1 min

What should I do when my early spring flowering bulbs are finished blooming?

By Keith Funk A: Remove spent flowers but keep all the foliage to rebuild the bulb’s strength to rebloom again next year. Show them...

Apr 4
1 min

When do I prune my flowering shrubs?

By Keith Funk A: Shrubs that flower before Memorial Day can be pruned immediately after flowering. These shrubs include lilac,...

Apr 4
1 min

When is the best time to lift and divide perennials?

By Keith Funk A: That depends on the plant. Most perennials can be lifted and divided now, in early spring as you see new growth...

Apr 4
1 min

When should I prune my raspberries?

A: Now. For fall-bearing raspberries like Fall Gold, cut all canes to within 6-8” of the ground. This type of raspberry produces fruits...

Mar 13
1 min

When should we divide our irises

When should we divide our irises? I have several huge clumps that don’t bloom as well as they used to. A: Irises (Tall-bearded,...

Mar 2
1 min

Harvesting Overwintered Root Vegetables

Q: We still have a lot of root vegetables left in the garden from last year. They are showing new growth. When can we harvest them? I...