Tiny blue flowers of speedwell


A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Time to act
Time to act

Do not Time to act in January

Do not Time to act in February

Do not Time to act in March

Do not Time to act in April

Do not Time to act in May

Do Time to act in June

Do Time to act in July

Do Time to act in August

Do Time to act in September

Do Time to act in October

Do Time to act in November

Do not Time to act in December

Speedwell (Veronica spp) is an annual weed that spreads through lawns and borders, and has attractive tiny blue flowers. It spreads by seed in spring and autumn to form plants with strong tap roots.



Speedwell appears in lawns as individual plants, inhibiting growth of grass, and, if unchecked, spreads through borders.

Find it on



The best way to tackle speedwell organically in borders is to hoe it before it flowers and sets seed, then remove it or leave it on the soil surface on a hot day to wither and die. In lawns, increase the height of the cut so that it is shaded out by the grass and ensure the sward is dense and healthy so it can compete with the weed.



In lawns, spot-treat the weed using a weedkiller such as a 2,4-D-based herbicide in spring or early-summer, when growth is at its most vigorous. Repeat through summer where necessary. Apply in cool, moist, still conditions when there is least risk of the chemical drifting onto and damaging nearby garden plants.