Iron Chlorosis

Plants need nutrients from soil to make chlorophyll, the green pigment in leaves which fosters photosynthesis. Nitrogen, magnesium and iron are among the nutrients a plant needs to make chlorophyll. “Chlorosis” means “lack of chlorophyll.” Specific symptoms are identified with the name. For example, iron chlorosis is a condition due to a lack of iron.…

Invasive Saltcedar

Tamarisk or saltcedar was introduced as an ornamental and for erosion control but it has become the number one threat to riparian ecosystem health in the southwestern United States. Over one million acres of riparian habitats are estimated to be dominated by this species. Tamarisk spreads by seeds (600,000 wind-dispersed seeds per year per plant)…

Edema

Edema is a plant’s reaction to an excessive amount of water in its cells. It is a physiological disorder that can affect a wide variety of indoor and greenhouse ornamental plants, particularly geraniums. The problem comes about when roots absorb more water than is released, or transpired, through the leaves. As a result, cells in…

Dwarf Mistletoe

Dwarf mistletoes are small, leafless, parasitic flowering plants. They cause major damage to ponderosa, lodgepole, limber and pinyon pines as well as Douglas fir. Hardwood trees aren’t affected. Infection starts when a dwarf mistletoe seed comes into contact with a suitable host. The seeds are explosively discharged at speeds up to 60 miles per hour.…

Xeriscape: Ornamental Grasses

asses are one of the dominant plants native to the Colorado plains. Native and adapted grasses have recently become a valued addition to Gardens. Ornamental grasses add two important elements to Gardens that no other group of plants can. With the slightest breeze, a Garden with grasses comes alive with movement and sound. Grasses are…