GreenThumb Digest | 25 January 2026
We're almost through the coldest stretch of winter, which means it's time to start early sowings indoors. A little warmth and light now grows strong seedlings ready to take full advantage of spring.
By Tony O'Neill | Simplify Gardening
We're almost through the coldest stretch of winter, which means it's time to start early sowings indoors. With a little warmth and light, you can grow strong seedlings ready to take full advantage of spring.
Main Topic
Starting seeds now gives long-season crops a valuable head start. The trick is warmth, light, and patience.
This week's key tasks:
Pro Tip
Don't overwater. Damp compost, not soaked, keeps seedlings healthy and reduces mould or damping-off.
Mini Q&A
Q: When should I start tomatoes indoors in cooler climates?
A: Six to eight weeks before your last frost is best. For most UK and northern US regions, that's late January to mid-February -- perfect timing to start now.
Quick Tip of the Week
This Week's Tip
Sprinkle a light layer of vermiculite over freshly sown seeds. It helps maintain even moisture and improves germination rates.
Resource of the Week
Free Download
Download my free Greenhouse Gardening eBook to learn how to manage warmth, humidity, and airflow for perfect early starts -- whether you're using a greenhouse, polytunnel, or sunny window.
Starting now means stronger plants, earlier harvests, and more control over your growing season. Take it slow, keep it warm, and watch life return to your garden one tray at a time.
You reap what you sow,
Tony O'Neill
Green Thumb Digest | Brought to You by Simplify Gardening
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