The gardener's winter cheat: grow inside
The garden is sulking. Half your beds are mud. You miss the daily walk-and-pick. Solution: bring some of the garden inside.
You don't need grow lights. You don't need a heated greenhouse. You don't need a south-facing wall. You need a windowsill, a couple of containers, and ten minutes a week. Here's what actually grows indoors through a NZ winter.
1. Salad leaves (cut and come again)
The easiest indoor crop, full stop. Sow rocket, mizuna, mustard, oak leaf lettuce, mibuna in a shallow tray. Snip with scissors, leave the base, watch it regrow. You'll get three to four cuts per sowing.
2. Herbs
Coriander, parsley, basil, chives, thyme, mint. Most herbs handle a windowsill life well, especially if you rotate which window they're on (bright light side of the house) every few days.
3. Microgreens
The fastest indoor crop. Sow seed thickly in a shallow tray of seed mix, harvest at 5 to 10cm with scissors. Two weeks from sow to plate. Pea shoots, radish, mustard, sunflower, beetroot, broccoli all work. Sprinkle on everything.
4. Spring onions
Genuine cheat code. Stick the white root ends of supermarket spring onions in a glass of water on a windowsill. They regrow indefinitely. Snip the green tops as needed. Costs nothing.
5. Garlic greens
Plant a single garlic clove in a small pot of soil. In a couple of weeks you'll have garlicky green shoots to chop into omelettes and salads. Same idea as spring onions but with garlic flavour.
6. Sprouts
Mung beans, alfalfa, lentils, chickpeas, mustard. Sown in a jar with a mesh lid, rinsed twice daily, ready in three to five days. Cheap, packed with nutrients, and basically impossible to kill.
7. Chillies
If you have a really warm, bright spot, a chilli plant will keep producing through winter. Most varieties go semi-dormant but will fruit on and off if it's warm enough. Cayenne and bird's eye are the most reliable.
8. Cherry tomatoes (if you're feeling brave)
Dwarf cherry tomato varieties will fruit indoors if you can give them six hours of bright light. You won't get summer yields, but you'll get tomatoes. Try 'Tumbling Tom' or 'Red Robin'.
9. Mushrooms
Technically not a vegetable, but they grow in the dark, in winter, in a cupboard. Oyster, lion's mane, and shiitake kits are widely available in NZ and take very little input.
10. Pea shoots
Sow whole dried peas (the cheap dried green ones from the supermarket work) in a shallow tray. Harvest the tops at 10 to 15cm. Sweet, crunchy, tasty in stir fries and salads. Cheap as chips.
The setup, briefly
- Best window: the brightest one in the house, ideally facing the sun for most of the day.
- Containers: anything with drainage. Old yoghurt pots with holes, seed trays, mason jars for sprouts.
- Soil: a good seed mix is worth the spend. Don't use garden soil (too heavy, may carry fungus).
- Watering: little and often. Indoor air dries soil out faster than you'd expect.
- Light: rotate plants every few days so they don't lean toward the window.
Common winter indoor problems
- Leggy seedlings: not enough light. Move to a brighter window or accept you'll have stretched salad.
- Mould on soil: airflow problem. Don't water until the top of the soil dries out.
- Fruit flies: usually came in on supermarket fruit. Vinegar trap and let the soil dry between waters.
The honest bit
You won't replace your full vegetable garden indoors. That's not the goal. The goal is to keep your hands in soil and your kitchen in fresh greens through the months when the garden doesn't want you out there.
Welcome to the dirt cult. We grow through winter too.
