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A Year in the Life of Your Greenhouse: Month-by-Month Growing Guide
Dreaming of homegrown veg all year round? With a little planning—and the right greenhouse—your growing space can be productive in every season. Whether you’re just starting out or looking to upgrade, explore our range of quality greenhouses to find the perfect fit for your garden.
Here’s a month-by-month guide to help you make the most of your greenhouse and enjoy fresh harvests whatever the weather.
January
Start the year by sowing hardy crops like early carrots, salad leaves, spinach, and mustard greens in trays or pots. If you’ve overwintered young plants, now’s the time to move them into larger pots and get them growing.
February
Sow a bit more this month to get a head start—think early carrots, salad leaves, and spinach for early picking. Encourage potatoes to sprout before planting, and keep an eye on temperature swings.
March
Spring brings temperature ups and downs. Ventilate on sunny days and keep the air between 7–18°C. Sow peas for shoots, broad beans, cucumbers, and courgettes in individual pots or a propagator. Keep trays well watered and rotate them for even growth.
April
As days lengthen, start moving hardier crops like carrots and peas outdoors. Sow more courgettes, cucumbers, and beetroot in the greenhouse. Plant out hardy salad crops and keep everything moist—watering every 2–3 days is usually about right.
May
By late May, the risk of frost has passed. Most hardy crops can go outside, but there’s still plenty to sow under cover—beetroot, French beans, kale, and sweetcorn all do well. Start kale in the greenhouse for winter harvest.
June
Peas are a favourite snack for mice, so protect young shoots! Sow peas in newspaper pots or yoghurt pots with drainage holes. Keep sowing salad crops and keep an eye on pests.
July
Sow winter lettuces such as May King, Venezia, and Winter Density for a steady supply through the colder months. Sow fresh seeds into an old ice cream tub, then prick out and space as they grow.
August
For autumn colour, sow Swiss chard—look for colourful varieties like Bright Lights and Magenta Sunset. Keep up with watering and harvesting to encourage more growth.
September
Try sowing Asian greens like tatsoi, which are hardy and quick to mature. Sow now for a fresh crop as the weather cools.
October
Sow herbs like basil, dill, chives, and parsley for winter picking. Use a cloche to get spring onions started for an early harvest next year. Sowing cauliflowers now gives you a head start for spring.
November
Great for starting microgreens—quick, intensely flavoured crops like beetroot, radish, coriander, peas, and rocket. Cut as soon as they show their first leaves and sow regularly for a steady supply.
December
If your greenhouse is heated, you can sow cold-tolerant crops like tomatoes, peppers, and chillies. Use this quieter month to tidy, clean, and plan for the year ahead—or browse our greenhouse collection if you’re thinking of expanding your growing space for next year.
Final Thoughts
A little monthly attention keeps your greenhouse productive and your kitchen well-stocked, whatever the weather outside. If you’re ready to start (or upgrade) your greenhouse journey, take a look at our full range of greenhouses—perfect for every size and style of garden.