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What Color Light Would Be The Best For Growing Plants In A Greenhouse

If you’re asking what color light would be the best for growing plants in a greenhouse, the answer is blue and red. However, it’s worth emphasizing that plants will grow well with most colors of lights, and the amount of each color will be the deciding factor. Blue and red are the best color light for growing in the greenhouse because they are close to the spectra that plants use.

Additionally, plants can also use some green and yellow. The gardener needs to ensure the proper color of grow light in the greenhouse beside the other conditions like temperatures. After all, the control you have on the greenhouse conditions is its primary advantage, regardless of location and weather. 

What Color Light Would Be The Best For Growing Plants In A Greenhouse

How To Choose What Color Light Would Be The Best For Growing Plants In A Greenhouse

When choosing a color of grow light, it’s a common mistake to choose green, yellow, and orange because we’re assuming they are similar to the spectrum given by the sun. After all, we’re mimicking the conditions that plants require for growth, right? However, studies show that photosynthetic activity of plants is in the blue and red frequencies. 

For growing plants in the greenhouse, it will be best to use red and blue lights because they take in maximum chlorophyll as a response in these colors. However, you must understand that there are different types of lights and colors that you can use in the greenhouse. While blue and red are the best colors for growing plants, a full spectrum LED grow light will be ideal for the greenhouse. 


Fluorescent lights vs. LED lights

If you use a fluorescent bulb that emits blue lights, this will help to get bushy plants. Fluorescent bulbs are also excellent when seeding because they don’t give off too much heat. It’s worth noting that when choosing a fluorescent lamp, you may choose between cool white and warm white, where the former has more blue. 

On the contrary, the more energy-efficient and long-lasting LED lights use wavelengths. This makes it easier for you to choose the actual color spectrum as opposed to fluorescent bulbs. Keeping this in mind, the following information will discuss each color and its effects on plants.  


Blue light

Before you use blue light, the emphasis is necessary on mixing it with other spectra of lamps. This color affects the leaf thickness and color, energy acceptance, and chlorophyll content, but some plant species can experience stunts in growth from this color. A minimum intensity of blue light is enough to help with growth and maturity rate and minimize plants’ water loss. 


Red light

Another influential color of light for growing plants in a greenhouse is red. This spectrum is best to combine with blue if you genuinely want to achieve well-developed plants. This is because this wavelength plays a role in the germination of seeds, flowering, and expansion of leaves and stems. 


Green light

Among the spectrum of colors, gardeners usually ignore the green light because it has the least efficiency. But according to Michigan State University, it is still useful in photosynthesis and plant structure. A green light is also helpful for the greenhouse with thick top canopies so that the lower canopy leaves still receive light.


What Is DLI?

When looking for the color of grow lights, you might encounter the term DLI. This term gives you an idea of how much light will be available to the plant to use for photosynthesis. Therefore, more DLI means more photosynthesis, equals better growth. 

In greenhouses, adding grow lights to increase the DLI will help produce quality plants. The rate of growth will depend on the productivity of the plants. However, you must also know the proper distance between the plants and your light. 

Remember that you might use fluorescent, LED, or high-intensity discharge lights depending on your greenhouse operation. If you’re using LED lights, maintain a distance of up to 30 inches above your plants. On the contrary, fluorescent lights can have a space of 6 inches above the plants, while high-intensity discharge lights can be 8 feet above the plants. 


Is Light Intensity Important For Growing Plants In A Greenhouse?

After learning the color spectra, the next step is to realize the importance of light intensity in the greenhouse. In general, the higher the intensity, the higher the rate of photosynthesis will be as well. As discussed previously, the addition of grow lights is vital because greenhouse glazing decreases the light available for photosynthesis. 



Maintaining optimum conditions in the greenhouse can be challenging. Besides the proper temperatures, do you know what color light would be the best for growing plants in a greenhouse? The direct answer would be a combination of blue and red lights because these colors are the most significant for plant growth. 

Studies have shown that these colors are close to the spectra that plants use. But while these are the best colors, a full range LED grow light will be the most beneficial for your plants. Each color has a role for the plant’s health, so learn the amount your plants will need for each color instead. 


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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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