Today 
Left unchecked, hairy bitter cress can quickly spread to infest the whole garden. This weed can complete its lifecycle in three to four weeks to disperse thousands of seeds, all of which can germinate to release their own seeds in quick succession. The weed may be introduced as seed, seedlings or as plants in compost when buying new plants from nurseries or garden centres. It may also spread from neighbouring gardens or remain dormant at depth in the soil to be brought to the surface by cultivation. Plants are also able to overwinter.
Solution
Organic
Remove young plants before they get a chance to flower and set seed. Pull them out individually by hand or hoe off young seedlings and remove from the soil surface. Avoid deep cultivation which brings up new seeds. Apply a mulch to the surface after weeding to prevent further germination.
Chemical
Use contact weedkiller to kill seedlings and young plants before they grow and get a chance to flower.
