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How Much Lighting Is Used Growing Tomatoes In Commercial Greenhouse

Gardeners must know how much lighting is used growing tomatoes in a commercial greenhouse, which is 60 Watts/m2 for 16 to 18 hours per day. Regardless if you’re growing in the greenhouse for business or personal use, it’s crucial to generate the optimal conditions indoors for your plants to thrive. A common mistake is to focus on the ideal temperature for growing tomatoes only and then neglect the lighting.

Much like temperature, the lighting system in the greenhouse plays a significant role in the success of your tomato garden. Plants won’t be able to perform photosynthesis if the conditions indoors are incomplete. Tomatoes thrive in full sun, but because we don’t want to overheat the greenhouse, supplemental lighting is the best solution to provide their lighting requirements.

How Much Lighting Is Used Growing Tomatoes In Commercial Greenhouse

What You Need To Know On How Much Lighting Is Used Growing Tomatoes In Commercial Greenhouse

In general, the amount of lighting that tomatoes require in a commercial greenhouse is 60 Watts/m2 for 16 to 18 hours per day. This is recommended both for sowing and transplanting by the government of Alberta. Since you’ll be running a commercial tomato greenhouse, it’s crucial to plan the lighting system and how to achieve this requirement. 



In the seedling nursery, high-pressure sodium lights will provide this condition. However, the placement of the lights is also prominent. Have the lights 6 feet above the seedlings and a distance of 9 feet between each light. Each row of light will then have 12 feet of space between them. 



Once you see the first real leaves appear, you will have to transplant the seedlings. The amount of lighting is still the same, but Alberta also recommends adding carbon dioxide supplementation. According to their findings, this combination will improve early yields. 

You will eventually have to reduce the lighting duration to 12 hours a week before you begin the second transplanting. This way, you can condition the transplants to the main greenhouse changes and avoid light shock. Otherwise, their development will halt. 


How Lighting Affects Tomatoes In Commercial Greenhouse

Now that you know the amount of lighting for the growth of tomatoes, you must learn what makes lighting crucial in a commercial greenhouse. For starters, the color of growing lights affects plants’ growth because they will dictate the similarity with the spectrum your plants use. Additionally, we all know that maximum light intensity will create the best fruit set.

This is the same reason why you’ll notice a higher yield in the spring compared to fall. Additionally, failure to provide the optimal lighting conditions will even prevent the tomato plants from developing flowers. Instead, they will only produce leaves and stems until there is light to support the flower and fruit. 

You must also be consistent in providing the optimal conditions throughout the growing season. For example, if the plants experience a sudden limitation, they risk getting smaller fruits. This will reduce the yield and even the quality of your harvest. 


What Is The Best Light For Growing Tomatoes In Commercial Greenhouse?

For growing tomatoes in a commercial greenhouse, you must know which type of light would be the best choice. High-pressure sodium lights are an economical choice in a commercial greenhouse. Cornell University also mentioned that they are great for increasing light intensity and extending day length. 

However, you must always check the setup of high-pressure sodium lights so that you’ll get uniform lighting in the entire greenhouse. But what about LED lights? Are LED lights the right choice for commercial greenhouse tomato production?

LED lights help in increasing the fruit number and yield. More so, using them in comparison to other supplemental lighting shows an increase in energy savings. Over time, you will have lesser expenses and higher profits.


Is Growing Tomatoes A Good Business?

Growing tomatoes is a good business because of the rapid growth of the industry. Using a greenhouse for production is a good strategy. This is because you will always be able to provide tomatoes at an excellent price, especially when they are out of season. 

You won’t need to worry about unpredictable weather and diseases. Using a greenhouse will ensure a steady production volume, and while you’ll also need to allocate budget being indoors, you can always learn about economic strategies. As mentioned by the Mississippi State University Extension Service, the success of a commercial greenhouse tomato production will depend on your management skills. 

Proactiveness and consistent attention are vital characteristics that you must possess. 



As previously discussed, growing tomatoes in a commercial greenhouse is an excellent investment to venture into. However, you must know the proper management practices, including how much lighting is used growing tomatoes in a commercial greenhouse. For sowing and transplanting,  the recommendation is 60 Watts/m2 for 16 to 18 hours per day. 

Ensuring the proper lighting in the greenhouse has a considerable impact on the production and yield of your crops. For the type of lighting system to use, extensions both discussed the advantages and disadvantages of LED lights and high-pressure sodium lights. Choosing between the two will depend on which you think is more beneficial for your situation. 

Overall, the lighting system is a part of a greenhouse that gardeners must never neglect. Regardless of the crop you have, you must meet their requirements to ensure a productive greenhouse. 


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How to Harvest Marigold Flowers and Seeds: Tools And Tips

How to Harvest Marigold Flowers and Seeds: Tools And Tips

Want to know how to harvest marigold flowers and seeds? Marigold flowers are a mainstay in most of the gardens. They bloom beautiful flowers all season long and they’re easy to grow from seed. Knowing how to save marigold seeds is essential if you want to continue growing them the next season.

Fortunately, harvesting marigold seeds are quite quick and easy. You only need to take the seeds from the flowers and let them air dry before storing them during the winter season. You can pack it up with a container or seed packets to save even more for the next growing season. Some of the marigold flowers are edible and best to mix in your salads to add a distinct flavor to it.


Tools You’ll Need to Harvest Marigold Flowers

The tools you’ll need to harvest marigold flowers include a basket or other available containers that can be used in harvesting flowers. You’ll also need some paper towels, a sharp knife, a pair of scissors, or gardening shears.

Since you need to evaluate or describe the process, get yourself some notes. Seed packets can be envelopes or closed-air containers excluding plastic containers and bags.


How to Harvest Marigold Flowers and Seeds

Here’s how you can harvest marigold plants for flower arrangements and bouquets:


Letting Marigold Flowers Dry

It’s important to wait until the right time to collect marigold seeds. You can harvest the seeds when the petals are dry already (when the base of each flower turning brownish). However, make sure there’s still is a bit of green color left in the base of the bloom. If you also wait until it is completely turned brown, it may start to rot or mold. It’s important to wait for the perfect time to harvest marigolds since the timing is crucial to have the right quality of marigold seeds.

Tip in harvesting: While you are harvesting, simply cut each marigold flower heads using your cutting equipment or either pinch it with your finger. However, be sure not to pull the flowers as it can harm the roots of your marigolds.


Opening the Marigold

Get your paper towel and set it on a flat surface. After, hold each bloom’s base, pull-off, and discard the petals and leaves of it. Then, you will easily notice the attached seeds inside the base. In the meantime, set the prepared blooms on your paper towels for bulk removal of seeds. You may also use larger towels to manage and accommodate the abundant blooms of your marigolds.


Removal of Marigold Seeds

Marigold seeds are likely to have a long, slender, and pointed appearance. Divided ends with black color and white color on the opposite edge. Gather your blooms, pull-off all petals, and leaves, and start pulling the seeds from the base. After getting all marigold seeds, discard the base in a single place like in bins or garbage bags. After sorting, put another paper towel on another flat surface and spread the pulled marigold seeds on it.


Drying of Seeds

As mentioned above, let your marigold seeds air dry for about a week in an uncovered paper towel. It will enable them to be preserved even in frost season and will prevent it from getting rot and mold.


Seed Storing

After drying the seeds, gather them and start placing them inside your seed packets to prolong their lifespan and will still be used after the frost date. Do not use plastic bags in storing your marigold seeds because it will retain residual moisture, which will affect your marigold seeds and even get rot and mold. To avoid forgetting about your marigold seeds, put a label on it to prevent possible disposal if unlabeled.


Using Stored Seeds for Replanting

After storing your collected marigold seeds, it is perfect to plant during the growing season. You can enjoy once again the benefits of it from house beautification to an edible ingredient for your salad.


Facts about Marigold Flowers

Marigolds are especially good for repelling insects and pests, making them companion plant for tomatoes, eggplants, tomatoes, and chili pepper because of its pungent scent of some variety. It is amazing having this kind of flow in your plant, imagine you don’t only have a beautiful attractive garden but having also a very natural insect and pest repellent that will protect your plants from any abrogation.

African marigolds have larger flower heads on plants that grow from 10 to 36 inches tall. While French marigolds are smaller and bushier, having only two inches of flower head across on plants and only having six to eighteen inches height. Sizes and colors vary on its classification, having a mixed combination is pretty great, will also add more pleasant and abundant color to your garden.


The Benefits of Growing Marigolds in a Greenhouse

Have you ever thought of growing your marigolds in a greenhouse? If you haven’t, it’s time to consider getting a greenhouse.

Greenhouses are great for keeping your marigolds safe from pests and diseases. Marigolds are susceptible to insects and blight, such as caterpillars, aphids, leaf spots, and mildews. You can lower the risk of plant damage by growing your marigolds in a greenhouse.

Additionally, greenhouses can also keep your plants safe from bad weather that could easily damage your flowers.


Final Thoughts on How to Harvest Marigold Flowers and Seeds

Knowing how to harvest marigold flowers and seeds is crucial if you’re planning to plant them in your garden. These beautiful flowers that usually come in yellow and orange colors are a great addition to any garden or flower arrangement.

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