When this works, this is called hybrid vigour, because the plant is more productive, more resistant to disease, and generally grows more vigorously. JOSH: We call these reduced leaves and they ...

However, gardeners know that harvesting should cease in June, or only a few stems should be picked as "over-cropping will reduce the plant’s vigour", according to Thomson and Morgan gardening ...

Nevertheless Thomson and Morgan's gardening aficionados advise that harvesting should come to a halt in June, or be significantly scaled back, since "over-cropping will reduce the plant's vigour".

these can be harvested as new plants that will have more vigour than the parent and keep your stock replenished and refreshed," he says. Greenman Multipurpose Hand Trowel: £15.95 at Amazon ...