Starting seeds indoors is one of the most easy things you can do in a small space garden. This spring, it is the perfect time to seed starting. Starting from seed gives you far more variety and far lower costs. Here is the complete beginner guide to starting seeds indoors.
Light Requirements
Most edible plants need at least 6 hours of direct sunlight daily. South-facing windowsills and balconies get the most light in the UK. If your space gets less than 4 hours of direct sun, focus on leafy greens and herbs which tolerate partial shade. For year-round growing regardless of natural light, an LED grow light running 14-16 hours daily replaces sunlight entirely.
Common Problems and How to Fix Them
Yellow leaves usually mean overwatering or nutrient deficiency — check drainage first, then consider a balanced liquid feed. Leggy seedlings are reaching for light — move them closer to a window or add a grow light. Aphids cluster on new growth and can be blasted off with a strong spray of water. Blossom end rot on tomatoes comes from inconsistent watering — maintain even moisture and the problem stops.
Mars Hydro TS1000 Full Spectrum LED Grow Light (150W)
The serious upgrade from the TS600. Covers 80x80cm for veg and 60x60cm for flowering with 150W true draw. Dimmable from 0-100% so you can dial in the exact intensity for seedlings through to fruiting. 354 high-efficiency LEDs deliver the same trusted Mars Hydro full spectrum (3000K-6500K plus 660nm red and IR). Fanless aluminium heatsink keeps it silent. Over 850 reviews on Amazon UK with a 4.7-star average — one of the best-selling grow lights in the country. Daisy-chainable for expansion. 5-year warranty.
Getting Started with starting seeds indoors
The best way to start with starting seeds indoors is to focus on the basics first. Choose the right container size for your space, use quality potting mix with good drainage, and place your setup where it gets the most light. Most beginners try to do too much at once — start with one or two plants and scale up once you see results.
Quick Tips for Success
- Check plants daily in hot weather — containers dry out much faster than ground soil.
- Harvest herbs from the top down — cutting the stem tips promotes branching.
- Water in the morning so foliage dries before evening, reducing disease risk.
- Add a thin layer of mulch on top of container soil to reduce water loss.
- Group pots together to create a warmer, more humid microclimate.
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