If you leave the buds on the plant until they dry up the thc will degrade to cbn which will give you a very couch lock high. It is really good for insomnia. If you pick to early you will be sacrifice bud size and potency and it will tend to have a buzzy high that has been known to give people the paranoid type of high. Read up on growweedeasy.com,  they will have better details.