Bloom Ultra Yellow Bottles 1 Liter Bloom Ultra Yellow Bottles uses organic plant signaling compounds and nucleic acids to trigger flower development increasing initial flower set without the use of PGRs (Plant Growth Regulators). Flowers will only be female flowers Will change the plant from grow to flower within 3 days  a plants life cycle is to produce flowers and then seeds, by extending the first dark period you will encourage the production of phytochromes so when you return to 12 hour light periods together with the application of bloom ULTRA the plant will change to flower within 3 days Plant height will be shortened due to the change to flower in a short period Can be used as a remedy if plants are stressed and are changing to hermaphrodite or male flowers  a high application of bloom ULTRA will stop this from happening