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The time has come for you to transfer your chives, parsley and mint plants into pots, and bring them into the greenhouse for them to develop and continue growing all winter. Tip: Planting several pots of each will allow you to harvest what you sow in succession for a continuous supply.

Other herbs you can plant:

  • Chervil 
  • Chicory
  • Coriander 
  • Fennel
  • Garlic bulbs
  • Lavender 
  • Marjoram 
  • Oregano
  • Parsley 
  • Rocket
  • Sage 
  • Sorrel 
  • Rosemary
  • Thyme 
  • Winter tarragon
  • Yarrow

2. Winter Greenhouse Salads & Vegetables

Growing potatoes in your winter greenhouse

As one of the typical and most popular winter-greenhouses-winter-vegetables-5-pak-choi

This oriental vegetable is a perfect addition to any stir-fry or noodle dish. Not only is it packed with healthy vitamins, but it’s also fast to grow! It can be sown as late as October, and it’d still be ready for winter harvesting.

Note: Leaves take roughly 30 days, compared to 70 days for the full plant.

6. Spinach and Kale

winter-greenhouses-winter-vegetables-7-cabbage-and-broccoli

When you manage to keep your greenhouse at the optimal temperature between 45-55F at night (7-13 celsius) and between 50-70F (10-21 celsius) during the day, both cabbage and broccoli can grow throughout the entire course of the winter season.

By planting them early, for instance—mid-winter time – they’ll be ready for planting outdoors in spring.

8. Brussels Sprouts

winter-greenhouses-winter-vegetables-9-carrots

Did you know that when carrots are planted in the fall, they can already be harvested as soon as the ground starts to defrost? If you’re having a good winter and when the icy ground melts once or twice before spring, check your carrots and they may be ready.

Note: There are a wide variety of carrots, so you’ll want to make sure you get the cold hardy ones.

Keeping the Heat In Winter Greenhouse

Passive Solar

Passive solar plastic bottles are an excellent cheap alternative to electricity in keeping your greenhouse warm throughout the colder months. All you have to do is to paint the plastic bottles black and fill them with water.

The black paint will help in absorbing heat during the day. While at night, the store energy is released automatically, which will heat the greenhouse space. For best results, you may place them around your wooden greenhouse or aluminium one. 

Insulate

To create a warmer environment for your plants while at the same time, reducing heat loss—you can cover your greens with fabric row covers. This is especially crucial for seedlings, as they tend to be more fragile.

Placing straw bales around your greenhouse can help with keeping the heat in. Although it may not add extra warmth, it will definitely help in reducing the heat loss, which is crucial for your vegetables’ survival.

Regular packing bubble wrap also makes for an excellent insulator. You can layer your plants or veggies around the inside of the greenhouse walls and frame. Or, wrap the individual pots to keep the roots warm enough.

Growing Winter Greenhouse Maintenance

Ensure a thermostat is working correctly to maintain the minimum nighttime temperature. It’s also best to invest in a minimum/maximum thermometer to monitor the winter weather conditions. You also want to clean your greenhouse’s gutters and water tanks.

Gardening in a Greenhouse Benefits

Greenhouses For Sale

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