Can You Sow Cosmos in the Fall?

Planting: Cosmos is one of the easiest flowers to grow from seed that is directly sown in the garden bed. ... Fall Planting: Cosmos may also be direct sown in the fall. The trick is to follow the exact opposite course of action required for spring planting, and scatter your seed after a few hard frosts have passed.

How late can you sow cosmos?

Cosmos seeds should be sown between March and April for the best results.

Is it too late to sow cosmos?

planting cosmos seedlings

Plant out cosmos seedlings after the risk of frost has passed in late May and June. They are happy planted in moderately poor soil.