When the soil temperature rises. Then a cold snap comes along a poof they die.
How do daffodils know when to bloom?
the length of day and temp of ground
Reply:The tulips tell them
Reply:when it starts to get warm
Reply:they're avtivated by the frost.... then the rise in temperature
Reply:Light levels mainly,and the opening of the actual flower is by temperature rise
Reply:It's seasonal like roses, lilies, pansies - any sort of flowers; they are destined to be spring or summer flowers. Daffodils are Spring flowers like crocus and snowdrops.
Reply:The Lillies whisper to them
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