The calyx behind the stigmas begins to swell. The odors of the seven-week varieties intensify. Week 7: The calyxes in the seven-week varieties swell to near bursting as THC is produced in the glands. At the end of the week they will be ready.

What weeks do buds swell the most?

Weeks 4-6: Buds Fatten Up

At this stage of cannabis flowering, your buds are getting bigger. They'll still have all the white pistils sticking out, but you'll be able to see the buds getting bigger every day.

How do I get my buds to swell up?

Another tip for growing bigger buds involves regularly feeding compost tea to your soils. Compost teat helps develop healthy mycorrhizal relationships between the soil and mycelium. The more mycelium in the soil, the more nutrients the plant is going to take up, which will result in bigger buds.