Answered: What To Grow In A Greenhouse In Winter?

Whether you have purchased or built it on your own, the greenhouse has been proving itself an asset for every gardener, particularly in winters. There is a fun fact that greenhouse is useful year-round with an extra effort sometimes. You can always insulate it using bubble wraps, for example, to add to its efficiency and grow plants depending upon capacity.

A young man in a beautiful small greenhouse, tending his plants

The biggest concern in this regard is what to grow in a greenhouse in winter? Because a wrong choice can always lead to loss and failure. We are here to serve you with some workable choices to make in terms of plants. So let’s begin the ride!

What to grow in a greenhouse in the winter?

In the winter months, the greenhouse needs extra care to make it work. Moreover, it is necessary to choose the plants wisely to bring fruit to your effort. The common perception is that it is hard to maintain a lush green garden in cold weather, whereas it is all about your choices.

There are several vegetables, flowers and other plants which support winter growth. The size of your greenhouse doesn’t have a lot of importance in this regard. Let’s take a head start by following this guide!

1. Hardy plants

Hardy plants are plants that can survive and grow under low temperature and weather conditions. To make your greenhouse beneficial in winters, these plants are best to choose. It is good to plant them in pots, place them in your greenhouse during winter and in late spring, when the weather is warm enough, place them outside.

These hardy plants include various perennial veggies and herbs, e.g. hardy lettuces, chervil, chives, coriander, garlic, oregano, lavender, parsley, winter tarragon etc. While growing these plants, you cannot leave them on their own. Most of these are root vegetables and root crops. Hence, make sure to take proper care in terms of providing water and light.

2. Winter salads and vegetables 

You can always grow seasonal salads and vegetables in winter. These vegetables and salads will not need special treatment concerning temperature even in your mini greenhouse because they usually grow when the temperature drops.

Hands picking spinach from the garden

You can start growing these plants by sowing seeds in pots or trays containing compost. Once the plant grows out, you can go to your greenhouse for its proper growth. These winter salad vegetables contain radishescucumbersparsnips, spinacharugulabeets, onions, leeks, turnips and Warrigal greens.

3. Potatoes

Among the most prominent winter vegetables, the best one is potatoes. You can grow a wholesome field of potatoes in the cold season in your greenhouse with little effort. If you are growing potatoes in some container or pot, fill one third with compost and rest with soil to plant. It will fulfil the nutrient requirement and will bring about optimum results. 

The plant will grow in early winters, and potatoes will be ready to consume at the end of the winter. Furthermore, the insulating greenhouse in case of an increased cold season will help sustain potatoes’ growth.

4. Lettuces

There is a variety of lettuce that satisfies the freshness of your salad plate. In winter, you can grow little gem, rocket lamb and winter lettuce in your unheated greenhouse garden. Going organic will help your salad fulfil its purpose to the fullest

5. Pak choi

Pak Choi provides you with plenty of vitamins and can grow in very little time, even in winters. In October, you can sow and harvest the results in late winters to enjoy a power dose of vitamins. So now make your vitamin dose ready in no time with this natural supplement. 

6. Kale and spinach

The growing season of kale and spinach is alike, and both can work even when the temperature falls below 0 Celsius. This means that both of these leafy green plants do not have much temperature protocol and can work in your usual greenhouse in winters. It hardly takes 60 to 70 days for these plants to become ready to harvest.

Woman taking care of a kale

7. Cabbage and broccoli 

Cabbage and Broccoli are good to grow in winters only if the temperature is not too low. Under low circumstances, the plants may die before they are ready to harvest. That is why it is advised to plant both cabbage and broccoli if the temperature range in your area is between 7 to 13 degrees.

These can be planted in late summers and then can be harvested in winters. You can always use row covers to reduce heat loss and to keep the greenhouse warm. As far planting time is concerned, you can plant these greenhouse plants both in early winter, and they will be ready in midwinters. 

8. Brussel sprouts 

Whenever the name of winter greenhouse comes, Brussel sprouts are treated to be its signature plant. They take a long time to grow and have a diameter of 4 to 5 cm. Taking five months to grow into a mature plant, They are ready for harvesting in March. 

9. Carrots

Carrots can survive in freezing temperatures, and you won’t need heaters to maintain the temperature of the greenhouse. You can plant carrots in winter, and your carrots will be ready as soon as your garden defreezes in early spring. This means that you would not have to make any special arrangements to keep your garden cosy to nourish carrots. Also, there are different types of carrots, and not all types can sustain severe cold weather. Hence make sure to choose the right one.  

10. Beans

Are you looking for the plant which requires the least effort and grows all by itself, serving you with all the perks even in the coldest months? Broad beans are the answer to your thought. You can sow beans in the early colder months and can get its tremendous supply in late winters. Make sure that the moisture of the soil is maintained throughout with proper aeration in the greenhouse. The plant is among very few plants that can survive frost season. So chill out and watch your beans grow. 

Tips to Keep Your Greenhouse Green

Choice of the plant is not everything you will require while considering the growth of plants in your winter greenhouse. Winter garden requires good care due to extreme winter temperatures. But you do not have to worry because we have covered gardening tips to keep your garden green this winter. 

1. Clean previous harvestings

Before going for planting the winter plants, clean the leftovers of summer harvesting properly. You will have to dig the soil to mix the nutrients of the soil. After this, the land will be ready for the new winter plantation. 

2. Choosing the right crops

The next step is making sure that you have chosen the plants that can sustain your area’s weather and soil conditions. If this step is clear, you are good to go.

3. Nutrients and watering

To fulfil the requirements of plants, make sure that you are watering plants properly and supplying them with compost

4. Careful harvesting

Make sure that you are harvesting at the right time. Harvesting too early will ruin your effort and will bring no food.

A small greenhouse in the garden next to a wooden fence

Most people lose hope in gardening in winter because of severe weather conditions. With this guide, you do not have to worry about your winter greenhouse garden. Applying suggested tips and planting suggested winter crops will certainly bring you fruit. In the end, do not forget to go for careful winter harvesting to make it the most efficient. 

So stop worrying and enjoy winters.

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