How & When To Sow Wildflower Seeds

When To Sow Wildflower Seeds

Loosely speaking, the ideal time to sow your Wildflower seeds is either in the Spring or Autumn. During these two seasons, the weather should be optimal, and allow for seed germination. 

If you wanted, you can in fact sow all year around as long as the weather is mild and rain is due. Germination will be slower though, if the weather is cold or dry. It's best to avoid times of very hot, dry weather and equally periods of cold frost. 


Being more specific, you can aim for mid March to late May. Into the summer, you can aim for late July or August if wet. Then again from September to October.

Its always good to judge the weather conditions yourself and tune into the outdoor temperatures.

When sowing, never let the seeds dry out. Coincide the sowing of wildflower seeds with any spring showers or autumn rain and sow when the soil is warm. 

When Will Flowers Bloom?

Sown in the Spring

Annual flowers will bloom roughly 8 weeks after sowing in the Spring. Expect some flowering in the early summer. Biennials and perennials should flower the following year. Sowings made after September may not germinate until May and therefore bloom in the early summer. 

Sown in the Autumn

If sown in the Autumn the biennials and perennials should flower the following year. When it comes to the annuals, some may start to grow but will likely get killed off by frosts. Most of the annual seeds will lie dormant in the soil and then kick into action in the spring.

Generally, the most impressive bloom with take place the Spring after sowing!

How To Sow?

Wildflower seeds germinate due to sunlight. The deeper you bury them the less chance you have of successful germination. A light scatter will suffice, followed by gently raking the soil over the seeds.

Its always a good idea to start with clean, weed free soil. It is also possible to sow your seeds in a pot or container using the same principles.

Seeds take up to eight weeks to germinate. 


Ensure your seedbed is kept moist, but not soggy. Allowing the rain to do its work is ideal, but if the weather is particularly dry, you can give them a helping hand with a watering can.

During a dry spell, aim to water newly sown wildflower seeds twice a week if the weather is warm & sunny. Water the soil lightly to avoid washing the seeds away.


Sowing your own seeds can be a case of trial and error. Some will flourish year after year, and others wont pop up at all. The trick is to keep trying! 

Growing plants from seed is incredibly rewarding and fantastic for local wildlife. Our bee's, butterflies and ladybirds will truly appreciate our efforts as we appreciate their beauty. 

Enjoy your growing experience & please do let us know how you get on! 

Stick to this general guide and your indoor plants will survive the Autumn months with ease.

Irish Wildflower Seeds

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Clay: The Contemporary Botany Company

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