Buying guide
Growing herbs and greens indoors
How to size a grow light to your space, set a light schedule, and keep indoor growing fresh-smelling all year.
The problem
Fresh herbs and salad greens are easy to grow on a sunny windowsill for part of the year, but most homes don't get enough light indoors to grow them reliably through winter. A grow light solves that, as long as it's sized and set up properly.
Key considerations
Light is the main ingredient. Full-spectrum LED grow lights like the Kingbrite P55 range give plants the light they need without the heat and power use of older lamps. Hang the light at the height the manufacturer recommends and raise it as plants grow.
Size the light to your space. A small shelf of herbs needs far less light than a grow tent. Start with the area you want to cover and choose the light whose recommended coverage matches it.
Keep air moving. Plants grow better with gentle airflow, and an enclosed growing space needs ventilation to avoid damp. A carbon filter on the extractor keeps the air leaving the space fresh.
Start simple. Basil, coriander, lettuce, rocket and microgreens are forgiving first crops. Once you're comfortable with light schedules and watering, you can expand.
Recommended products
Which is right for you
| Product | Warranty |
|---|---|
| Kingbrite P55 800W LED Grow Light | 3 Year supplier warranty, handled through Syntech |
| Kingbrite P55 240W LED Grow Light | 3 Year supplier warranty, handled through Syntech |
| Kingbrite P55 480W LED Grow Light | 3 Year supplier warranty, handled through Syntech |
| AMX 250mm Replacement Filter | 1 Year supplier warranty, handled through Syntech |
| AMX 250mm Carbon/HEPA Filter Box | 1 Year supplier warranty, handled through Syntech |
FAQs
Which size grow light do I need?
Match the light to the area you want to cover. A smaller light suits a shelf or small tent of herbs and microgreens; larger lights cover a bigger growing area. Each product page lists the light's power and the coverage area the manufacturer recommends.
How many hours a day should the light be on?
Leafy greens and herbs grow well with long days. Many indoor growers run lights for around 14 to 16 hours, then switch them off so plants get a rest period. A timer or controller makes this automatic.
Why would I need a carbon filter?
Growing in an enclosed space builds up humidity and plant smells. A carbon filter on an extractor fan cleans the air leaving the space. Choose the filter diameter that matches your fan and ducting (for example 250mm).