When Can I Begin Growing Marigold Seeds In A Greenhouse?

Prior to getting to know the insights on “when can I begin growing marigold seeds in a greenhouse,” it is necessary to get introduced to the basics. Having these seeds that grow into plants in your gardens or greenhouse will add variety to your current collection.

When Can I Begin Growing Marigold Seeds In A Greenhouse

What Are American Marigold Seeds? 

Characterized with their tall measurement at up to 36 inches high, the American marigold are tall plants though breeding has produced the shorter heights. Though the annuals are native to the Mexican nation, they are also found in Africa and in the American continent. The flashy annuals are the boldest and biggest among such marigolds.

The American marigolds, though, may depend on the breeding to produce this height. However, they have large, fully double florals in the hues of orange, gold, and yellow. 

To grow the American marigold, they must grow well in full sun with well-drained, moist soil, but they may tolerate drier conditions as well. Be sure to have them implanted outdoors soon as the dangers of the frost have gone by. The seedling spaces must be from 10 to 18 inches apart.

How Soon Can You Start Seeds In A Greenhouse?

Starting to have these seeds too early when indoors may cause the seedlings to become leggier and pot bound at the time outdoor planting time arrives. Too late, and the harvest may be delayed. Be sure to plant the seeds that love the warmth, with transplants outside earlier and cold soil with air temperatures that may harm the plants.

To get started, fill your peat pots or flowerpots with the moist seed starters. Plant your seeds based on the directions on the packets, as what many instructional guides will indicate. The number of seeds must be from two to three seeds at a depth of ½ inch. Ensure that you cover seeds with soil and mist this with water.

When Should I Start Seeds In Massachusetts?

Massachusetts, The Bay State, is one that is endowed with lands ideal for gardening, but when you are using greenhouses, there are several sources for the seeds in the state. In several areas of the state, the final frost date is around the 15th of May. 

Count the number of weeks from each vegetable to get transplanted in your garden. This will tell you when you should begin the seeds indoors. Seeds of the root crops must be sown directly in the garden.

The time depends on the seeds you have. To get started with the American marigold seeds, follow these steps.

  • Moisten the potting soil slightly. Place the potting mix in a water bucket, adding water to moisten. Mix this up.
  • Loosely fill the containers to get level with your soil. Avoid packing this down.
  • Plant larger seeds such as cucumber or muskmelon into your container where you will grow the seeds.
  • Then, press three seeds ¼ inches in-depth into the potting mix, covering this with the potting mix.
  • Smaller seeds like peppers and lettuce must be seeded in rows, before transplanted or thinned, as well as directly seeded. 
  • Water lightly with water that’s warm. Be sure that you manage the upkeep of the plants.

How Do You Start Seeds In A Small Greenhouse?

Then, it is also important to get to know how you can start seeds in a small greenhouse, as part of the discussion on “When can I start growing American marigold seeds in Massachusetts in a greenhouse?” 

Initially, what is a mini greenhouse? These are smaller compared to the rest of the greenhouses in the market. Mini greenhouses may vary in size between two square meters to about eight square meters, and they are very instrumental, especially with your limited space to grow, for instance, in the backyard. 

Such greenhouses also let you extend the season for growing beyond the usual timeframe. It generally protects your seedling when the ambient temperature changes, and drops below sub-zero. The greenhouse may also conserve the heat, allowing your soil to stay hydrated, and thus, protecting the gardening from pests and other animals. 

It also tempers or regulates the weed to grow in the garden. The benefits of these greenhouses are plenty, returning the prices you are paying for.

  • To get started planting your seeds in the small greenhouse, for example, your American marigold seeds in Massachusetts, fill your greenhouse planting tray or pots depending on the instructions set on the potting mix. Then, fill the tray with an inch of lukewarm water as you set the tray inside. 


  • Let the soil absorb moisture for 30 minutes, or until the soil’s surface is moist, before you empty the excess water from your drip trays. 


  • Next up, sow your plant seeds in a prepared mix at the depth that the package specified. Then, plant two seeds per pot or the planting cell, as you sow the seeds around an inch apart and set them an inch apart in your flats and trays. Mist the surface of the soil with water to moisten after planting, whenever needed.


  • Set your greenhouse cover right on top of the tray. Place the greenhouse over to a location that receives indirect, as well as bright sunlight, where temperatures are from 65 to 75 degrees Fahrenheit. The cover must be able to retain soil moisture, so it does not require watering until after germination.


  • After this, prop open your greenhouse cover after your seeds start to sprout to let condensation to dissipate. Use your small stick or pencil to hold an end of the cover-up.


  • Water your seedlings once the surface of the soil dries up. Pour water into the drip tray, so your soil soaks the moisture from below, and your seedling leaves do not turn wet, leading toward fungal disease. Remove the cover of the greenhouse completely before seedlings grow tall enough to touch on the plastic.

Time Of The Year To Plant Marigolds

The right timing, even when cultivating American marigold seeds, should be necessary to know. The farmer may be able to plant marigold seeds directly outdoors during the spring after the frost danger has passed for your area or when the seeds indoors start to grow about eight weeks after the final frost. 

The seeds may usually germinate within four to 14 days in soil temperatures up to 75 degrees Fahrenheit. You may also begin transplanting your seedlings once the frost danger has passed. The marigolds may bloom 45 to 50 days after sowing, as it goes on to bloom until the frost.

If you enjoyed our blog post here, then read further to learn more about gardening basics and details for advanced greenhouse farming. When can I begin growing marigold seeds in a greenhouse should be more possible to answer now.


Leave a Reply

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

How To Prevent Root Rot In Hydroponics: 3 Useful Tips

If you’re a newbie gardener who’s looking to find ways to hone your skills, you’d want to learn how to prevent root rot in hydroponics even before this problem affects your plants.

Hydroponics can be advantageous to crops in more ways than one. However, it also comes with risks of diseases, such as root rot, which can be destructive or even lethal to your plants.

Unfortunately, there are no effective methods to recover the wilted parts that were affected by the root rot once it hits your plants. The only thing you can do if you do not want this catastrophe to befall your crops is to prevent it before it happens. Read on to learn more about this subject.


What is Root Rot?

Root rot is a disease that attacks the plant roots and causes them to suffer decay. This usually happens when a lack of oxygen supply occurs in the substrate.

To give you an idea, think about plant roots that are submerged in water that only has a little oxygen in it. Over time, the plant suffocates and dies.

Aside from rot and decay, this disease also leads to the proliferation of fungi that are naturally present in the soil. These include Rhizoctonia, Alternaria, Pythium, Botrytis, Fusarium, or Phytophthora. As soon as fungi colonies start to grow, they tend to target the weakened roots and infect your precious plant babies.

Once the plant becomes infected, they won’t be able to take in what they need to grow – water, oxygen, and other nutrients. When this happens, it won’t be long before the plant dies.


What is Hydroponics?

In case you’re not aware, the term hydroponic is derived from a Latin word that means “working water”. To put it simply, hydroponics is an art that involves growing various types of plants without soil. If you’re like most people, the first thing that comes to mind when somebody talks about hydroponics would be a picture of plants with roots suspended into the water without using any type of growing medium.


Avoiding Root Rot in Hydroponic Systems

Detecting and identifying root rot can be tricky. When your plants get infected, their leaves and roots gradually wither until the whole crop itself dies from the lack of nutrients, which is a common symptom of many diseases.


What causes root rot in hydroponics?

One of the requirements in hydroponics systems is oxygen. Without it, your plants are basically on the road to death. On the other hand, lack of such is one of the major triggers for root rot, and it must be avoided at all costs.

Just like when planting in soil, you loosen up the ground so that your plants’ roots can have their required intake of oxygen. That is the case for crops grown in aqueous solutions as well. If they cannot breathe, they would not be able to grow.

Another agent for root rot is the temperature. The last thing you would want in your system are parasites that leech nutrients intended for your plants and infect the water during the process. In common terms, these fungi are called molds.

One of the best breeding grounds for these is warm and moist areas. For this reason, if the water temperature inside your reservoir is high, then you are susceptible to it. Something as minor as letting the solutions exposed to sunlight can already be a risk factor.


3 Useful Tips on How to prevent root rot in hydroponics

There is good news! Root rot in hydroponics can be prevented! Just follow these tips:

Tip#1: Use the right air pump

If you do not want root rot to affect your plants, you merely have to avoid its causes. If you need oxygen, keep the water bubbling by providing an air pump of appropriate size, and also give importance to proper ventilation in the room.


Tip #2: Maintain the temperature

The temperature should be maintained within the 70 to 80 degrees F range. Get rid of any materials that can make your system vulnerable to infections, and make sure not to disturb your crops while they are trying to grow.


Tip #3: Get rid of the rotten parts

However, if you failed in preventing the disease, then the rotten parts should be removed immediately. Cut them off as there is no chance of reviving them, and focus on the potential new growth instead. Fix your hydroponics system and eliminate the risks.


Why Give Greenhouse Gardening a Try?

Greenhouse gardening offers numerous benefits to greens aficionados who dare to take their gardening experience to the next level. Aside from acting as a shield against the effects of inclement weather, a mini, hobby, or semi-pro greenhouse can also serve as a protective layer that keeps harmful bugs and critters at bay.

What’s more, its enclosed structure allows you to control your plants’ growing conditions including the temperature, light, moisture, and ventilation of the greenhouse’s internal environment. With a controlled environment, you’ll be able to extend growing seasons and grow plants that aren’t native to your area.



No matter how well-informed you are about how to prevent root rot in hydroponics, you cannot completely eradicate the risks. Therefore, to avoid the worst-case scenario, you should be prepared to sacrifice the infected for the sake of others. While you’re at it, consider trying your hand at greenhouse gardening as well.


Leave a Reply

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

Sign up to our newsletter!