Deer and Gardening

Many Coloradoans live in areas where deer regularly visit. While it’s not hard to understand why deer consume the same vegetables that humans eat, additional “deer salads” include annual and perennial flowers as well as trees and shrubs. Deer-resistant plant lists have been put together but the problem is that deer in different areas appear…

White Clover and Black Medic Control in Lawns

Wet, cool springs and early summers promote prolific growth of two legume family weeds in lawns, white clover (white flowers) and black medic (yellow flowers). Leguminous weeds can be both common and competitive in lawns that have not been fertilized adequately with nitrogen for a couple of years. Regular fertilization, especially late season (September-early November)…

Purslane

Purslane is an annual weed that germinates after soil warms in early summer. A native of Europe, purslane is related to the portulaca or moss rose grown in flower Gardens. It has succulent leaves and a low-growing, mat-like growth habit. Clumps may grow to two feet in diameter. Purslane is a problem weed in flower…

Kochia and Russian Thistle

Russian thistle (Salsola tragus) and kochia (Kochia scoparia) are common annual broadleaf weeds that become “tumbleweeds” in the fall. These plants can be problematic in many situations where the soil is highly disturbed. These annuals can produce thousands of seeds per plant and the key to control it to keep them from going to seed.…

Iron Chlorosis in Trees

Iron chlorosis is a term describing leaf yellowing (lack of chlorophyll) due to insufficient iron. Iron is a mineral essential for plants to make chlorophyll, in turn needed for photosynthesis. Lack of iron in a tree may be due to a high iron need, less effective iron uptake, or insufficient usable iron in the soil.…

Colorado Noxious Weeds

Aliens have invaded the Colorado landscape! These aliens are in the form of non-native weeds called “noxious” in Colorado. They’ve gotten that name because of their invasiveness, aggressiveness and the rate in which they spread. Noxious weeds are difficult to control, and most are very adaptable. They also can withstand a variety of harsh conditions,…

Xeriscape: Mulches

In the high plains grasslands, dead grass and plants accumulate. These plant remains are natural mulches and are a great benefit for growing plants. They keep the soil moist and loose, permit air and water to pass freely to plant roots, and reduce soil erosion and weeds. Following Mother Nature’s example will provide those same…