PICK YOUR MOMENT
The time to harvest is when the seed heads have turned brown and the seeds have gone hard. You need them to be as ripe as possible but, equally, to catch them before they burst, so check often. Choose a fine, dry day and, using sharp scissors or secateurs, snip off the seed heads, placing them in a paper bag or envelope to avoid any fungal problems that might arise with a plastic bag or container. Carry a marker pen and scribble the name of the plant onto the bag as you gather, as it’s easier than you might think to get seed stocks mixed up. If you don’t have enough time to sort out your seeds straightaway, leave the bags in a cool, airy place until you can sift through them.