Most Common Non-Native, Invasive Weeds in Pittman Wash
Tamarisk or Salt Cedar
Mexican Fan Palms and California Fan Palms
Mexican Fan Palms and California Fan Palms
Identification: Evergreen scale-like needles, frequently with reddish or pinkish flower clusters, turning white to dull yellow.
Control Method: For plants larger than 18 inches tall - Cutting at the base and injecting with stump with appropriate herbicide, such as Garlon. Removal of the cut plants is recommended to reduce fire hazard. Fo
Identification: Evergreen scale-like needles, frequently with reddish or pinkish flower clusters, turning white to dull yellow.
Control Method: For plants larger than 18 inches tall - Cutting at the base and injecting with stump with appropriate herbicide, such as Garlon. Removal of the cut plants is recommended to reduce fire hazard. For seedlings or plants less than 18 inches tall – pulling the plants out which includes getting the roots out is the best method. Seedlings established one year can grow 4-5 feet the second year and will start flowering, producing more seeds. Seedlings which are 8 inches tall may have a root that is 2 feet long or longer!
Note: Each tamarisk tree or shrub produces thousands of seeds each year. For tamarisk to establish, the seedlings need full sun and exposed sands or gravels that are moist near the surface. Disruptions to sites by removing native trees or shrubs which shade the ground, or by disturbances to the soil surfaces will prepare a seed bed for next year’s seedlings of salt cedar.
Mexican Fan Palms and California Fan Palms
Mexican Fan Palms and California Fan Palms
Mexican Fan Palms and California Fan Palms
Identification: Obvious, except for seedlings which have only a single leaflet (like one part of a frond).
Control Method:Cutting at the base. For young palms which have not formed a trunk, cutting just below the ground is recommended, as these plants may resprout.
African Sumac
Mexican Fan Palms and California Fan Palms
African Sumac
Identification: A shrub ranging from1 foot to 20 feet tall. Each leaf has 3 long narrow leaflets.
Method of Removal: Cut shrub to remove the root crown, just below the soil surface.
Fountain Grass
Russian Thistle (Commonly called Tumbleweeds when dry)
Russian Thistle (Commonly called Tumbleweeds when dry)
Identification: A grass generally around 20 inches tall, with thin leaves, growing from out from the root crown.
Method of Removal: With the applicator nozzle placed into the center of the leaves, spray an approved herbicide into the root crown where the new leaves are forming. Note: It is not necessary to spray the entire plant!
Russian Thistle (Commonly called Tumbleweeds when dry)
Russian Thistle (Commonly called Tumbleweeds when dry)
Russian Thistle (Commonly called Tumbleweeds when dry)
Identification: Shrubby, round plant, frequently with a reddish stem or with red lines along the stems with mature. The leaves are tipped with a needle-like tip. Flowers are very small, with a whites circle around a reddish center. These plants are annuals, and must grow from seeds every year.
Method of Removal: The best and most economi
Identification: Shrubby, round plant, frequently with a reddish stem or with red lines along the stems with mature. The leaves are tipped with a needle-like tip. Flowers are very small, with a whites circle around a reddish center. These plants are annuals, and must grow from seeds every year.
Method of Removal: The best and most economical way to remove these plants is to pull them out by the roots before they are a foot tall (before they are old enough to flower). Most of these plants are concentrated in several locations in Pittman Wash. Using leather gloves, pull the small plant out by the roots, and just lay these plants on dry ground.
Chaste Tree
Russian Thistle (Commonly called Tumbleweeds when dry)
Chaste Tree
Identification: Shrubs up to 8 feet tall with 6 to 9 leaflets (generally 7). Flowers clusters are at the top of the stem and are blue to purple in color (white to light gray when in bud).
Method of Removal: Cut shrub to remove the root crown, just below the soil surface
Spanish False Fleabane
Identification: A herbaceous plant, frequently with many branches and numerous flowers occurring from March to November. The flowers are small, yellow daisy-like occurring at the ends of stem. The leaves are up to 4 inches long and rough in appearance. These plants are mostly annuals, and must grow from seeds every year.
Method of Remov
Identification: A herbaceous plant, frequently with many branches and numerous flowers occurring from March to November. The flowers are small, yellow daisy-like occurring at the ends of stem. The leaves are up to 4 inches long and rough in appearance. These plants are mostly annuals, and must grow from seeds every year.
Method of Removal: The best and most economical way to remove these plants is to pull them out by the roots before they are a foot tall (before they are old enough to flower). A herbicide treatment may be effective. Removal of these plants must be from the upper occurrence in Pittman Wash, with removal being conducted from upstream down. Most of these plants are concentrated along the water course in Pittman Wash, but they occur wherever the soil is moist. These plants also occur next to drip irrigation or other irrigation locations on the upper banks, next to landscaping.comfortable place to call home, and we work tirelessly to make that a reality.