Red valerian, Centranthus ruber


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 Time to act in March

Do Time to act in April

Do Time to act in May

Do Time to act in June

Do Time to act in July

Do Time to act in August

Do not Time to act in September

Do not Time to act in October

Do not Time to act in November

Do not Time to act in December

Valerian, Centranthus ruber, is a pretty plant that produces bright pink-red, fragrant flowers from late-spring to late-summer, but it also produces masses of seed that germinates all over the garden. Butterflies love it, so if you want to encourage wildlife into your garden, keep a few stems of valerian for them. There is an ornamental white form of valerian.



Stems of bright pink-red flowers that quickly spread across the garden, taking over in beds and borders.

Find it on

poor, exposed soils, all over the garden


The best organic control is digging the plant out and trimming it to keep it in check if you don’t want to remove it altogether. If you see seedlings appearing, hoe them off or pull them out by hand.



If you don’t want to dig it out, you can spot-treat the plant using a weedkiller such as glyphosate. Avoid spraying on a windy day and near other desirable plants.