Germination periods of common arable weeds

The interaction between weed and crop growth is important, with most problems occurring when emergence coincides. Knowing when weeds are most likely to germinate will help you pinpoint control.

How to manage weeds in arable rotations


All year

Annual meadow-grass, common chickweed, common field speedwell, crane’s-bill, fumitory, groundsel, mayweeds, red dead-nettle, shepherd’s-purse and thistles.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Spring main flush

Black bindweed, black mustard, charlock, common orache, fat hen, fool’s parsley, hedge mustard, hempnettle, knot-grass, pale persicaria, redshank, spring wild-oat and volunteer oats.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Early summer main flush

Black nightshade, scarlet pimpernel and sun spurge.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Autumn main flush, with a smaller spring flush

Cleavers, common poppy, field pansy, forget-me-not, scentless mayweed, small nettle, thistles, volunteer barley, volunteer oilseed rape, volunteer peas, volunteer wheat and wild radish.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Autumn main flush

Barren brome, black-grass, Italian rye-grass, loose silky bent, meadow brome, volunteer beans and winter wild-oat.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

How to manage weeds in arable rotations

Key

Germination
0%

>0–5%

>5–20%

>20%


When was this information last updated?

This page is based on content from the encyclopaedia of arable weeds publication. Since it was first released in 2008, the publication has been redesigned several times but not revised. However, it remains a good foundation for general information on the distribution and biology of weeds.



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