What sort of bloom fertilizer are you using? It doesn't have a higher % of Nitrogen than Phosphorus, does it? Three weeks is a bit long for it not to be showing any flowers. If you are already using a bloom fertilizer, make sure the plant isn't rootbound before upping the bloom fert dosage.

Might be a good idea to fill out the troubleshooting form at the top of the Plant Problems section. If there's something else ailing it, that info (along with pictures, preferably) will help to clear things up.
Mr. Clandestine Reviewed by Mr. Clandestine on . 3 weeks 2 days into flowering hi everyone, its been a little over 3 weeks into flower and iam seeing very slow progress. iam almost positive it is a female so iam wondering whats taking so long. my plant is under a 400 watt hps and is VERY large and healthy looking. Maybe a stronger fertilizer with more phosphorus?? is there something i can do or should i just stay patient? thanks in advance. Rating: 5