Content tagged "colorado"

What is the white crusty stuff that appears on the soil and pots of houseplants?

Updated: June 30, 2010

When should I fertilize my fruit trees?

Updated: June 29, 2010

What are miller moths, where do they come from, and what is the best way to control their presence inside a house?

Updated: June 29, 2010

How do insects overwinter in Colorado?

Updated: June 29, 2010

What is the difference between a mulch, a soil amendment and an organic fertilizer?

Updated: June 29, 2010

What is a one-inch-long, wasp-looking insect that has a stinger about four inches long?

Updated: June 29, 2010

What ornamental grasses grow well in Colorado?

Updated: June 29, 2010

Can woolly-bear caterpillars do damage to plants?

Updated: June 28, 2010

What could be causing white crystals to form on the leaves of a tomato plant?

Updated: June 25, 2010

What can be done about an orange substance oozing from an aspen tree?

Updated: June 25, 2010

What is the recommended way to winterize rose bushes, especially hybrid teas and floribundas in Colorado?

Updated: June 25, 2010

What can be done to treat a honeylocust tree that has been attacked by locust borers? Are they after the sap or something else?

Updated: June 24, 2010

What are some potential problems that could affect aspen trees in high plains backyards?

Updated: June 24, 2010

Is it a good investment to have spruce and aspen trees sprayed to prevent insects in the spring?

Updated: June 24, 2010

I've had a lovely chrysanthemum plant for the past 5 years. This year it died over the winter. Was that because of the blizzard or the late snow we had?

Updated: June 24, 2010

My pear tree I planted this spring is dropping yellow leaves. My thirty-foot tall hackberry is doing the same thing. I'm watering regularly with a sprinkler and the grass looks okay under the trees. What's wrong with them?

Updated: June 24, 2010

What kind of iridescent green insects (about 1/8-inch long) could have attacked whirling butterfly bushes and eaten nearly all the plant leaves? Will they return and, if so, what is the best method of control?

Updated: June 24, 2010

What kind of large, red flying wasp with blue wings would be dragging a large rubbery-looking spider across the patio, then stuffing it into a hole in the ground? Is it a hunting wasp, and what kind of spider is it?

Updated: June 24, 2010

There is some foamy yellow stuff growing on the wood chip mulch in my landscape. What is it and how can I remove it?

Updated: June 24, 2010

I have a Canada red cherry that suckers continually at the base. What can I do to control these suckers?

Updated: June 24, 2010

Some of the leaves on my maple tree are brown and curling at the edges. Is the damage caused by some type of disease or insect?

Updated: June 24, 2010

Small bubbly blobs of milky-white foam can be found on my junipers. What is it and can it damage my junipers or other garden plants?

Updated: June 24, 2010

The leaves of my aspen have been turning brown around the edges and some are dropping. What should I do?

Updated: June 24, 2010

What would be good companion plant for oriental poppies?

Updated: June 24, 2010

What could be eating round holes in the leaves of rose bushes?

Updated: March 26, 2010

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.