Note: you can still germinate seeds at lower temperatures, but the process will take quite a bit more time to get going. Most seeds sprout best between 70-85 degrees Fahrenheit, and since the average home is not this warm your seeds might need a little help to get started. What is a Humidity Dome?Ī humidity dome is a clear piece of plastic that sits on top of a seed tray to capture moisture and keep your seed warm during the germination process. They can also help speed up the germination process and reduce the need for you to constantly ensure your seeds have enough water to grow.ĭomes will keep the relative humidity levels in the tray at ~98%, which is ideal for seed starting. A seed will still germinate without a humidity dome – however, using a dome on top of your seed trays can help you get higher germination rates with your seed. Is a Humidity Dome Necessary? Should I Cover My Seed Trays?Ī humidity dome is not necessary for germination. While it doesn’t come with a heat mat, you’re getting the highest quality seed trays as well as 2 humidity domes. If you’re looking for the highest quality starter kit, this would be it. Here are some of the best humidity domes I’ve found. For most gardeners, the height really won’t matter too much as you’ll be removing the dome once seeds begin germination. The most common type is a 2-inch dome, but you can find them as tall as 7-8 inches high. You can get some that are really tall or more shallow, some have vent holes and some do not.
There are a few options when it comes to humidity domes that you can buy. Let’s talk about that clear piece of plastic that looks like something commercial growers would use – the humidity dome. So why not put in just a little more effort and get a higher yield and bigger harvest of plants for your garden?Įach of these components, while not necessary, have a specific purpose and help increase the germination rate so more of your seeds turn into seedlings.
If you’re already putting in the extra effort and starting seeds indoors, you clearly want to get a head start on the growing season. The difference is going to show in the length of time it takes to germinate, as well as the seed germination rate you end up with. You can put seeds in dirt, water them and hope for the best – or you can get a full-blown seed starting kit with a heat mat, humidity dome, and high-quality propagation tray, along with some soilless starting mix. Starting seeds for this year’s garden? The thing about seed starting is that you can make it as simple or as complicated as you want.
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