When and How to Start Seeds in a Greenhouse

When and How to Start Seeds in a Greenhouse

A greenhouse is one of the most versatile and useful gardening tools available, in my opinion.

These structures dramatically increase the length of the growing season and are indispensable for starting seeds.

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A greenhouse provides the perfect conditions for seed starting, including higher humidity, brighter light, and increased warmth than you would have otherwise.

Whether you are new to growing from seed or you’re an old hand who is starting out with a greenhouse, this guide has you covered with the following topics:

If you can’t wait to get started, let’s jump right in.

Technically, you can start the propagation process in your greenhouse any time you want, provided you either live in a warm enough region or have supplemental heating.

What you need to keep in mind is how large the seedlings will become before you can put them in the ground.

More than once, I’ve gotten too excited and started seedlings way too early. They had outgrown their pots weeks before it was time to transplant out into the garden.

Find out the recommended start time for the species you wish to grow and go with that – this information is typically listed on your seed packet.

For example, hot peppers should be started about two months before you plan to put them out.

Of course, none of this applies if you are going to keep your plants in the greenhouse for the duration of the growing season.

If that’s the case, start them whenever you want, so long as it’s warm enough inside and there is enough light.

Most seeds are better off