How to Plant Seeds in a Mini Greenhouse
A mini-greenhouse helps to maintain warm temperatures in the soil and air, which aids in seed germination. Most mini-greenhouses come with pots or a plastic tray that holds the potting mix and a clear plastic covering that allows in light and helps the soil retain moisture.
These greenhouses are most often used indoors, according to an article from the Seed Collection, although you can also set them outside during sunny weather if the temperature is above freezing. The clear covering continues to allow light in after the seeds sprout, creating a greenhouse environment during the early plant growth period.
1. Prep the Soil Mix
Fill the greenhouse planting tray or seedling pots, depending on the design of the greenhouse, with a sterile potting mix. Fill the water tray with 1 inch of lukewarm water and set the soil tray or pots inside it. Allow the soil to absorb the water for at least 30 minutes or until the soil surface becomes moist; then empty the excess water from the drip tray.
2. Sow the Seeds
Sow the plant seeds in the moistened soil mix at the depth specified on the seed packet, which is usually a depth that’s approximately twice the width of the seed. Plant two seeds in each pot or planting cell, or sow the seeds 1 inch apart in rows that are spaced 1 inch apart in trays or flats. Mist the soil surface with water to moisten it after planting if necessary.
3. Cover the Tray
Set the greenhouse cover on top the tray and place the mini-greenhouse in a location that receives bright, indirect sunlight and where temperatures are between 65 and 75 degrees Fahrenheit. The cover helps retain moisture in the soil mix so it doesn’t need to be watered until after germination.
4. Prop the Cover Up
Prop open the greenhouse cover after the seeds begin to sprout to allow condensation to dissipate. Use a small stick or pencil to hold one end of the cover up.
5. Water the Seedlings
Water the seedlings when the soil surface feels dry. Pour water into the drip tray so the soil soaks up the moisture from the bottom and the seedling leaves don’t get wet, which can lead to fungal disease.
6. Remove the Cover
Remove the greenhouse cover completely before the seedlings grow tall enough to touch the plastic.
Things You Will Need
Planting tray or pots
Sterile potting mix
Small stick or pencil
Disposable aluminum baking dishes that are sold with clear plastic covers make excellent homemade mini-greenhouses. Use small individual planting pots or cell planters to hold the soil and seed inside.
As an alternative, an article published by the Illinois Extension notes that you can sow your seeds in winter using a translucent 1-gallon plastic jug as a mini-greenhouse: Clean the jug, punch drainage holes in the bottom and cut around the circumference about halfway between the top and bottom, leaving 1/2 inch uncut to serve as a hinge. Fill the bottom half with moistened potting mix, sow your seeds, tape the top down and your mini-greenhouse is ready to take outside.
Some mini-greenhouses consist of shelves covered in clear plastic for use indoors or out. Vent these types of greenhouses by opening the door or the installed vents. If you use these greenhouses outdoors, place a thermometer inside and vent the unit before temperatures climb above 80 F as high temperatures can kill seeds and seedlings.
Ghetto Greenhouse:Seed Starter
If you want to start a garden one of the cheapest ways to do so is to start your own plants from seeds. You can go out and buy a mini-greenhouse but why do it when you can make one. All you need is a plastic container (I’ll use a soda bottle) some potting soil, and some seeds. The seeds you can buy or collect it doesn’t matter. You can watch the video below on how to make a ghetto greenhouse, or you can skip below to the text and images.
You don’t need to use grow lights with this method either as we’ll take advantage of the free light the sun provides. It’s a really easy and cheap way to start plants for a garden that’s either there for your enjoyment or for growing your own food.
After you’ve grown your seeds you can use it to beautify your home, or do some guerrilla gardening, donate them to charity or sell your plants for raise money for your favorite cause.
Who doesn’t love plants?
(that was rhetorical)
You can see more stuff on one of my blogs.
You can also check out this as the seed starterseed starter blog entry. Check out the comments section for a couple of cool links to other people using this method.
Step 1: Get Your Tools Ready.
In this example I used a soda bottle but you can use anything around your house. It’s a good way of recycling plastics. You need scissors, a soda bottle, soil, and seeds. The seeds you can buy or save the seeds from foods you eat and give them a try.
Step 2: Getting Your Ghetto Greenhouse Ready
Once you’ve cut your soda bottle in half make some holes in the bottom so that water for drainage. I take my scissors and just punch a hole in the bottom. You can use a screw driver or a soldering gun or a heated object that will melt plastic.
Step 3: Assemble Your Ghetto Greenhouse
After you have made your drainage holes in the bottom of your soda bottle. Cut some slits into the side about an inch long. Then fill with about four inches of soil. If you bought your seeds follow the directions on the seed packet so seed preparation and soil depth planting. Otherwise Google “seed germination database” to find instructions for your particular seeds. Now water your seeds by either gently pouring water in or sitting the container in water.
Once you’ve done that you can assemble your greenhouse by sliding the top on (hope you remembered the slits) and pushing it down tightly.
Step 4: The End Result
Once you’ve watered and assembled your Ghetto Greenhouse it’s time to put it in the right location. I place them outside in the back yard in a very sunny spot and let them get rained on so I don’t have to water as much I just make sure to check that they’re not drying out or staying too soggy.
This is how I start all my seeds that require a cold dormant period (called stratification) and when the weather warms up it is how I start my seeds that don’t require cold to germinate. You can also place them inside in a sunny window if you don’t have yard space or you’re trying to grow something like Citrus seeds in the middle of winter.
Once my seedlings have emerged I’ll take the top off for about an hour a day for a week to get them used to the outside world. Then I’ll plant them in containers or in the ground or I’ll pot them up and share with friends and neighbors anything I have extras of.
This method can be used to start off anything from Perennials, to Annuals, to Edibles. You can even use this if you’re growing under light indoors. Take your seedlings and grow a beautiful garden or plant up that ugly empty lot down the street for you. If you can’t bake to save your life, consider a plant sale to raise money for your charity. You can find seeds really cheap in a lot of places like garden centers and even big box stores, like that place everyone hates. Or save the seeds from the foods you buy from your organic store and grow your own tomatoes, onions etc. And it won’t cost you an arm and a leg to buy a seed starter and you’ll save money buy growing your own.
6 Tips for Successful Greenhouse Cannabis Growing
Growing cannabis in a greenhouse is becoming an increasingly popular option for cultivators. There are many advantages to growing your cannabis in a greenhouse as opposed to a grow room, although each way of growing cannabis has its own challenges too.
However, greenhouse growing is a great way to be self-sufficient in producing your own medicine, even if you’re only after a small quantity. By following some basic rules in greenhouse growing, provided that you have good quality seeds, you can succeed in getting a great harvest. Greenhouses are efficient in offering your cannabis plants protection from harsh weather while allowing you to monitor growth.
Best of all, greenhouse growing can be affordable especially if you live in the right climates. There isn’t much need for electric supply, special equipment, or expert experience.
Here are the tips you should follow for successful cannabis greenhouse growing:
- Before the start of each season, make sure that you clean your greenhouse well. Get rid of any garden waste inside, and wash the glass thoroughly. You can even use your family greenhouse to yield a year’s supply of cannabis. Keeping it clean will ensure that it keeps good growing conditions for your cannabis plants. It’s also necessary that your greenhouse receives as much natural sunlight as possible.
- Reduce visibility. You don’t want your neighbors to see that you are growing cannabis plants to avoid troubles down the road. With the help of basic garden netting or fencing, as well as some companion plants, you can succeed in camouflaging your cannabis grow. There is also the option of “white washing” your greenhouse through the use of white paint which has the added benefit of preventing your greenhouse from overheating during the summer. White paint inside the greenhouse at the start of growing season will ensure complete privacy while protecting your plants from extreme heat especially during the summer months.
- Make the most out of your soil. You may choose to use high-grade compost to replace all your soil, or just add some organic fertilizer or manure to nourish your soil. Before you start greenhouse growing, you may want to check the pH levels and soil quality before deciding on methods to improve your soil. The less time you spend on maximizing your soil, the better your chances are in growing quality cannabis plants that yield big harvests with potent cannabis buds.
- Protect your plants from pests such as snails and slugs. You can use pellets that have been designed to protect plants from these pests. Copper collars or rings can also be placed on the base of your plant to prevent them from attack.
- Decide if you want to grow in a container or directly into the ground. The most popular method for greenhouse growers is to choose growing cannabis in the soil, because the advantage is that it provides your plants unlimited root growth. It also lets you grow plants that are as high and wide as 3 meters, which can yield over 1 kilogram of cannabis from just one plant. If you don’t have this kind of space or flexibility, you can also use containers in a greenhouse which lets you move the plants around as necessary. The main challenge in container growing is having to constantly feed and water your plants since growing them directly in the soil is a lower maintenance option. No matter which option you choose, keep in mind that when it’s extra hot, it’s necessary to ensure your cannabis plants receive adequate water and feed because this is when they need it the most. Greenhouse growers typically add feed to the watering to save time and effort, while giving you peace of mind that your plants have the nutrients they need to produce massive yields.
- Use the best seeds possible. You don’t have to break the bank to obtain good quality seeds; it will reward you handsomely when you compare it to the harvest you’ll get. Choose varieties that grow well in greenhouses, especially autoflowering seeds.
Growing your own cannabis in a greenhouse is a rewarding and fulfilling activity. However, you have to invest time and energy to ensure that it’s done right. You can even grow high-grade, top-shelf cannabis in a greenhouse with minimal effort provided you ensure the conditions are correct.