When To Start Growing Vegetables In A Greenhouse - Krostrade

Welcome to the Krostrade Marketplace, please excuse our appearance, we are still under construction.

When To Start Growing Vegetables In A Greenhouse

A year-round productive vegetable garden from February is possible if you know when to start growing vegetables in a greenhouse. Perhaps the most significant advantage in greenhouse farming is that you can start growing from the beginning of the year until the last month. If you’re using a heated greenhouse, it’s even possible to grow vegetables amidst all seasons. 

More than knowing when to start growing vegetables in a greenhouse, you must consider the seasons and classify plants into hardy, cold-season, and warm-season crops. Learning about the planting zones in your state will also work to your advantage because it lets you know what plants will survive. To give you a general idea, those rated zone 1a have extreme annual temperatures of -60 to -55°F, while zone 13b is 65 to 70°F.

When To Start Growing Vegetables In A Greenhouse

How To Know When To Start Growing Vegetables In A Greenhouse

You can start growing vegetables in a greenhouse as early as February in locations like Colorado because it is suitable for cool-season and warm-season plants. This is why you will know when to start growing vegetables in your area if you know your planting zone and expected conditions. And since you’ll be using a greenhouse, you can adjust the indoor conditions accordingly.


Classify vegetables


Hardy vegetables

Winter gardening is risky even in a greenhouse, but you can still start hardy, frost-tolerant crops in December or January. Some gardeners in Oregon also mentioned some vegetables could withstand a heavy frost. Common hardy plants for cold temperatures are beets, spinach, leeks, kale, turnips, carrots, radishes, Brussels sprouts, and Swiss chard. 

You can harden frost-tolerant crops by gradually introducing them to outdoor conditions and then begin to transplant in February or March. Bulb onions are even hardy enough for January transplanting. There are also semi-hardy vegetables that are ideal for cool-season planting in the greenhouse. 


Cool-season vegetables

You can grow broccoli, cauliflower, cabbage, and lettuce at the beginning of March in the greenhouse. Parsley and celery can also withstand light frost. These vegetables are best hardened off and transplanted in April.

If you’re in a temperate region, it’s also possible to start a second crop of cool-season vegetables in July and August before transplanting them later in the month and September. This will prepare them for the cooler temperatures in autumn. They will also be ready for harvest at this time through the next early spring. 


Warm-season vegetables

The warm-season vegetables like tomatoes, squash, eggplant, legumes, peas, cucumbers, peppers, and corn can get busy in the greenhouse in March and April. However, remember that some areas can experience frost even into spring, so the middle of April or the beginning of May is more ideal for these crops. Because warm-season vegetables can’t tolerate cold temperatures, it’s best always to check the conditions in the greenhouse beforehand. 


Know your seasons


Late winter to mid-spring

You can start growing hardy plants in the greenhouse from late winter to early spring. If you have a heated propagator, you can sow some other plants early as well. Additionally, you can sow fast-growing tender vegetables in mid-spring.


Late spring to late-summer

Late spring to early summer is the best time to plant summer vegetables, and then you can harden them after the frost. By mid-summer, you can harvest summer crops and remove spent vegetables like cucumber. By late summer, you can sow vegetables like lettuce, baby carrots, and salad leaves in the greenhouse for a new harvest. 



By autumn, you can plant some vegetables like parsley and calabrese indoors. Some crops like peas are also best for overwintering. In Maine, you can plant leafy greens in fall, and cruciferous vegetables are even suitable for early August planting. 


Is Year-Round Greenhouse Planting Possible?

Year-round greenhouse planting is possible because you can control the conditions indoors for your vegetables. In states like Colorado, you can even seed cold-tolerant crops in February without supplemental lighting. Greenhouses also work best to start most plants until you can transplant them outside. 

You can then seed warm-season crops and harvest cold-tolerant crops around March or April. May can also be the month of harvest for leafy greens and for transplanting the vegetables you started indoors. Still, it’s best to have a cooling system to prevent overheating on your warm-season crops for June to July.

August to September is for winter gardening, while November to January might require supplemental lighting as the day length shortens. Overall, you want your plants to mature by November or December so that you can still harvest slowly through winter. And depending on your area, the greenhouse can protect your vegetables against frost in the winter. 



The most significant advantage of greenhouse gardening is that it makes it possible to be productive year-round. But do you know when to start growing vegetables in a greenhouse? In states like Colorado, it’s possible to sow or plant as early as February. 

Upon knowing your planting zone, seasons, and crop classifications, you can plant in the greenhouse regardless of the conditions. You can use the greenhouse to protect against frost or start some vegetables indoors until the outdoor climate is suitable. 


Leave a Reply

Your email address will not be published. Required fields are marked *

How To Grow Mexican Heather. 3 Steps To Success

How To Grow Mexican Heather. 3 Steps To Success

You only need to overcome three steps to know how to grow Mexican heather. This compact perennial is unique not just because of its looks but also with how easy it thrives amidst hot conditions. However, do note that Mexican heather plants don’t do as well in cold regions. 

Before you give them up, you may also find it comfortable to grow Mexican heather in the greenhouse. Remember that the stable indoor conditions in the greenhouse make it ideal for starting plants. However, it can also offer protection to plants that don’t tolerate extreme climates. 


How To Plant Mexican Heather


Step #1. Planning and preparation



The first step in growing Mexican heather is planning and preparing to guarantee success. You want to check your calendar on when is the best time to plant Mexican heather. If your climate is similar to the Mediterranean regions, you can easily plant Mexican heather at any time

However, it’s generally ideal for growing this plant late in fall, so it has established itself before the temperatures get challenging. And as you can assume, you will need to grow Mexican heather in the greenhouse if your area has harsh winters. Starting Mexican heather from seeds indoors will guarantee flowers in the summer.



After determining when to plant Mexican heather, you must prepare the site for your plants. Remember that the location is crucial to guarantee the steady growth of any plant. Therefore, you may benefit from starting Mexican heather indoors if your climate is fluctuating. 

In general, you want somewhere with fertile and well-draining soil. Test your soil to do the necessary amendments and improve its structure. The plant also does best with some shade because the full sun affects the foliage’s health. 


Step #2. Planting

After you started Mexican heather in the greenhouse, gently take the plant from the pot. Make sure to untangle and loosen the roots before setting the plant in the center of the hole. Allocate a space of three feet between each plant, and the top of the root ball should be half an inch above the ground. 


Step #3. Maintenance

Maintaining the newly planted Mexican heather plants is no different from other plants. You want to keep soil moisture to help the plants establish themselves. However, be sure not to create a wet environment that can decay the plant. 

Adjust your watering practices according to the weather. Mature Mexican heather plants will tolerate challenging conditions like drought and summer heat. However, it’s best to provide two to six hours of partial shade instead. 



How To Propagate Mexican Heather



You can grow Mexican heather from seeds similarly to other flowering plants. Use pots with standard potting mix for sowing, and then add some soil over the seeds. Maintain soil moisture, and you can place the pots in the greenhouse to protect the seedlings from the environment. 



You can also root cuttings from a healthy Mexican heather plant. Take a four-inch stem section, remove its lower leaves, dip the end in rooting hormone, and then plant in a pot with soil. Continue watering until root establishment for transplanting. 



Division is an excellent way to grow Mexican heather and also keep the plants from overcrowding an area. Gently loosen the soil around a plant to make lifting easier and divide the root ball into sections using a sharp and sterile knife. Depending on its size, you can get up to four divisions for transplanting in containers or onto the garden. 


Caring For Mexican Heather


Water and fertilizer

While Mexican heather can tolerate dry conditions, it would still be optimal to keep them well-hydrated. You can water the plants deeply once per week, but ensure that you’re using a well-draining medium and container. Then, wait for the ground to dry in between waterings to avoid creating standing water. 

Remember to adjust the frequency and amount of water you give to the plants. More so, container Mexican heather plants would dry faster, so water them often. You can also mulch every spring to maintain soil moisture and even smother weeds. 

Do you fertilize Mexican heather? Mexican heather is relatively low-maintenance and not meticulous when it comes to nutrients. However, you can still boost and maintain your plant by fertilizing in spring, summer, and fall with a balanced feed. 



Pruning is not a requirement for Mexican heather. However, you can maintain the size and shape of your plant by trimming lightly every spring. You can also use this practice to remove the unhealthy parts. 


Common problems

As one can expect, Mexican heather plants are not that prone to many diseases and pests. However, you still want to maintain proper cleanliness and diligence to prevent infestation and diseases. It would also be best to maintain a stable environment such as a greenhouse to discourage spider mites or fungal infections. 



You can add another colorful perennial to your garden in three simple steps. Those who know how to grow Mexican heather can quickly tell you that this plant is the easiest to grow. However, remember to plan your planting date and site to ensure that the conditions will support the plant’s development. 

You can start indoors and then plant Mexican heather somewhere with partial shade and fertile, well-draining soil. Ensure soil moisture but never overwater the soil. Once established, you shouldn’t have any issues in growing Mexican heather. 

Leave a Reply

Your email address will not be published. Required fields are marked *

Sign up to our newsletter!