Posted: 22/07/2017 at 14:56
It's not unknown for seed suppliers to get their seeds mixed up and I suspect that is the case here. You don't normally let courgettes ripen - the idea is to pick them when they are the size you want (in my opinion, the smaller they are picked, the tastier they are.) If you leave them on the plant too long they can become huge in some varieties - basically marrows!) If you leave them long enough to form seeds inside, the plant will often stop producing more flowers and fruit.