To guarantee vibrant spring colour, understanding tulip bulbs when to plant canada comes down to a strict biological requirement: bulbs need to go into the …
Tag: cold window
The cold window is the critical period of sustained low temperatures that bulbs, seeds, and perennials require to trigger root development and future blooms. Missing this natural chilling cycle leads to stunted growth or complete bloom failure. Tracking soil cooling helps pinpoint optimal planting before frost locks the ground, securing vibrant spring growth.