March is when the garden finally wakes — longer days, softening soil, and the first real chance to sow the flowers that will shape your summer.

In Naas, this is the moment to give tender plants a warm indoor start and scatter hardy annuals outside as the ground begins to stir.

Seed Flowers to Start Indoors

Begin with flowers that need protection and steady warmth:
Sweet peas, stocks, zinnias, and agastache all thrive when sown under cover now. The seedlings will be ready to move outside once there is no more risk of frost.

Seed Flowers to Sow Outdoors 

As soon as the soil is workable, you can direct‑sow hardy annuals like nigella, poppies, cornflowers, and nasturtiums. These don’t mind cool nights and settle in quickly.

A flower farmer Tip

Expect unpredictable weather, give seedlings plenty of light, and prepare soil well for outdoor sowing. March is your foundation month — quiet work now becomes colour later.