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What Is The Ideal Temperature For Growing Cannabis In A Greenhouse

If you don’t know what the ideal temperature for growing cannabis in a greenhouse that is 70 to 80°F, cultivating cannabis indoors is will be impossible. At the same time, remember that cultivation laws for cannabis are different for every state, and it’s essential to check them before growing the plants. Alaska, Colorado, Washington, Maine, Massachusetts, Michigan, Nevada, and Oregon are states that allow cultivation, but still, read the additional guidelines for each. 

Environmental control is a significant consideration when growing cannabis in a greenhouse. Like all plants you grow indoors, your plants’ survival is significantly affected by how well you can maintain optimal temperatures. Simultaneously, the cannabis plants are USDA hardiness 8 to 11, which can also give you a gist if your location will support their growth or more modifications in the greenhouse. 

What Is The Ideal Temperature For Growing Cannabis In A Greenhouse

Knowing What Is The Ideal Temperature For Growing Cannabis In A Greenhouse

To know the ideal temperature, take into consideration that cannabis plants formerly come from warm and dry locations. Therefore, the plants will have a hard time surviving if your state experiences harsh average temperatures. However, the Handbook of Energy Crops has also stated that cannabis is incredibly adaptable, making it an excellent greenhouse crop.

Below are the best air and soil temperatures for cannabis plants.


The best temperature for growing cannabis in a greenhouse and how to maintain it

The best temperature for growing cannabis in a greenhouse is at 70 to 80°F. Because of this, it’s best to sow your cannabis seeds in early spring in the greenhouse. The seeds will germinate at low temperatures, but be careful not to reach below 33.8°F since this condition will prevent germination. 

Overall, the greenhouse should not be extremely hot nor cold. Since you’re growing in a greenhouse, you also benefit from protecting cannabis from freezing weather due to the natural heat. However, you can always add a heating system if your location is freezing.  

As for controlling heat, you can practice ventilation and cooling systems to prevent buildup, especially if you experience harsh months. Some growers also recommend using CO2 injection and lighting to have more control in air temperatures. But what about the soil temperature for growing cannabis in a greenhouse?

Maintain 72 to 75°F on fertile, loamy soil to support your plants thoroughly. On the contrary, sandy and acidic soil will not work best for cannabis. And lastly, don’t forget to pick the appropriate varieties according to their intended usage like fiber, edible seed, and oil.


Is humidity control important for growing cannabis in a greenhouse?

Now that you know the optimal temperatures for air and soil in your greenhouse, is humidity important for growing cannabis? As you can expect, controlling the humidity also plays a role in the success of your cultivation. You already have a headstart in using a greenhouse to control the environment much more comfortably.

Aim to start seedlings and young cannabis plants at 60 to 70% because they prefer moisture. As they grow, you can reduce the humidity at 40%, especially during week nine, when your plants have flowered. Failure to check the humidity in the greenhouse can be detrimental because of the heat, mold, and other diseases.

So how can you control the humidity levels in the cannabis greenhouse? Vents, dehumidifiers, or automatic controls are the best solution for ensuring the optimal humidity level indoors. The latter would save you the trouble because some systems can automatically vent or dehumidify depending on the moisture levels.


Other Considerations For Growing Cannabis In A Greenhouse

Besides temperature and humidity, you want to consider lights, blackout systems, fans, and active carbon filters to address potential unwanted odors and other indoor limitations. You also want to ensure adequate space inside the greenhouse as you would, regardless of the plants you’re growing. Lastly, choose a greenhouse location facing west or south to provide excellent conditions. 


Why Use A Greenhouse For Cannabis?

For starters, growing cannabis in a greenhouse already protects your plants from the inconsistencies of outdoor conditions, and maybe even theft. A greenhouse ensures stable and consistent requirements for the optimal growth of the plants. And because of its enclosed design, you can keep off burglars. 

More importantly, the control you have on the climate will allow you to extend phases in the cannabis life cycle. You can even harvest much later or plant earlier to get several harvests in a year. With proper planning and maintenance, you can reap multiple benefits with greenhouse cultivation. 



Perhaps you’ve checked your state’s laws, and growing cannabis is something you want to pursue. You already have the greenhouse ready, but do you know what is the ideal temperature for growing cannabis in a greenhouse? Temperature and humidity control are crucial for the survival of cannabis plants, so always maintain the indoor conditions at 70 to 80°F and 40% humidity level when your plants have flowered. 

Overall, check your hardiness zone and study other considerations before cultivating cannabis. It’s also worth emphasizing that there are different laws for each state, which is the first factor that you must look into. Afterward, you can always use the advantage of a greenhouse in modifying the conditions that are suitable for cannabis plants. 


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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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