Sowing Hardy Annuals can be tricky and seed packets will only tell you one piece of information and it generally isn't one size fits all!
To help you with WHEN to sow your Hardy Annuals - here is some Plant Math to help you get a bit more accurate and have a perfect spring garden!
1. Find out when your FIRST frost date is.
2. Count backwards six weeks - as you need your hardy annuals in the ground for at least six weeks of decent growth putting down great root systems.
3. Work out your germination rate of the seeds you're sowing and add this to your six weeks.
4. Then add 4 weeks of growth - maybe a week or two of potting on to get decent plugs that won't be immediately decimated by slugs...
So to summarise:
Hardy Annuals Formula:-
First frost date - six weeks - 4 weeks of growth - germination rate = Hardy Annuals sowing date!
Which should bring you to august! Am I right?
Most seed packets will tell you to sow in September but by then it's usually too late and you are stuck over wintering them indoors and not allowing them to get those great root growth it needs to look fabulous for spring!
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