These bulbs have all the energy and water in them to complete the blooming cycle. The bulbs are activated by temperatures of 70F or more. The higher the temperature, the faster the blooming. If the bulbs are showing any greenery, they should have the first open flowers in 4-6 weeks. If they are still dormant, they should have the first open flowers in 6-8 weeksLight isn’t necessary for blooming but is important for photosynthesis (making the stalks and leaves green).