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Fire-on-the-mountain (Euphorbia cyathophora)

By Asst Editor Cliff B, on February 10th, 2012

Origin:

Fire-on-the-mountain (Euphorbia cyathophora) Weed.

Native to tropical North America (i.e. the USA and eastern Mexico) and possibly also Central America (i.e. Belize, Costa Rica, Guatemala, Honduras and Panama), the Caribbean and South America (i.e. Bolivia, Colombia, Ecuador, Argentina and Chile).

Naturalised Distribution:

This species has a widespread, but scattered, distribution throughout much . . . → Read More: Fire-on-the-mountain (Euphorbia cyathophora)

A-Z of Weeds, Economics of Weeds, Pastures, Weed Management, Weeds and pests   ,   Print this Page

Fingergrass (Digitaria abyssinica)

By Asst Editor Cliff B, on February 10th, 2012

Description:

Fingergrass (Digitaria abyssinica)

Perennial with slender long rhizomes and erect culms up to 30 cm high; leaf blades 3-5 mm wide, but on occasions up to 7-8 mm. Panicle of two to nine racemes, often whorled and sub-erect, 2.5-8 cm long with broadly elliptic, completely glabrous obtuse spikelets 2 mm long. The . . . → Read More: Fingergrass (Digitaria abyssinica)

A-Z of Weeds, Economics of Weeds, Pastures, Weed Management, Weeds and pests   ,   Print this Page

Filaree (Erodium cicutarium)

By Asst Editor Cliff B, on February 10th, 2012

Introduction:

Close up of the Filaree (Erodium cicutarium) Weed.

Erodium cicutarium is an annual, winter annual or biennial that is a pioneer on disturbed and arid sites. It can cause yield reductions of crops and the seed is very difficult to clean out of small seeded crops. Erodium cicutarium is considered a noxious . . . → Read More: Filaree (Erodium cicutarium)

A-Z of Weeds, Economics of Weeds, Pastures, Weed Management, Weeds and pests   , , , , , ,   Print this Page

Fig buttercup (Ranunculus ficaria)

By Asst Editor Cliff B, on February 10th, 2012

Introduction:

Fig buttercup (Ranunculus ficaria) Weed.

Ranunculus ficaria is a perennial plant and spring ephemeral (lasting for a very short time) that spends much of the year underground as thickened tubers. In the North American region, native ephemeral wildflowers grow and flower early in the spring before leaf-out of the forest canopy. Ranunculus . . . → Read More: Fig buttercup (Ranunculus ficaria)

A-Z of Weeds, Economics of Weeds, Pastures, Weed Management, Weeds and pests   , , , ,   Print this Page

Field thistle (Cirsium arvense)

By Asst Editor Cliff B, on February 10th, 2012

Introduction:

Field thistle (Cirsium arvense) Weed.

Cirsium arvense is an herbaceous perennial in the Aster family. It occurs in nearly every upland herbaceous community within its range, and is a particular threat in grassland communities and riparian habitats. C. arvense is shade intolerant and can tolerate soils with up to 2% salt content. . . . → Read More: Field thistle (Cirsium arvense)

A-Z of Weeds, Economics of Weeds, Pastures, Weed Management, Weeds and pests   ,   Print this Page

Field sowthistle (Sonchus arvensis)

By Asst Editor Cliff B, on February 10th, 2012

Description:

Field sowthistle (Sonchus arvensis)

This plant is a winter or spring annual that is 1-6′ tall, branching very little except near the apex where the flowerheads occur. The central stem is hairless and dull green; sometimes it is tinted with reddish purple. The alternate leaves are up to 10″ long and 2½” . . . → Read More: Field sowthistle (Sonchus arvensis)

A-Z of Weeds, Economics of Weeds, Weed Management, Weeds and pests   ,   Print this Page
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