Unfortunately, while much is written or shared by word of mouth about other methods of replenishing your collection, very little is written about propagating houseplant seeds.
Windowsill gardeners have probably been propagating houseplants since the first person brought the first plant indoors. Cuttings, whether from stem or leaf, are the most common method of propagation. Seeds are less common, yet, there are a couple of good reasons for growing houseplants from seeds.
Most of these botanical beauties originate in the tropics. Therefore, they require no dormancy and will germinate as soon as conditions are right, even if they are still tightly packaged. This makes them difficult to store for future propagating. Houseplant seeds should never be refrigerated, as is sometimes recommended with other seeds. Care should also be taken to keep them dry until ready to use. So plant them as soon as possible.
There are a number of container types available: flats, small pots or paper cups. Any small container will do as long as there are small holes in the bottom for drainage. Fill your container with a lightweight growing medium so your germinating houseplant seeds have room to swell and send out roots.
Sprinkle your seeds sparingly on a white sheet of paper. With a damp finger, lightly touch the seeds. This should make it easier to pick up a few seeds at a time to distribute in each container. Once all the seeds have been delivered, cover them lightly with potting medium. The general rule of thumb is to sow seeds three times deeper than their diameter and this rule holds true for propagating houseplants, too. Some seeds, like those of the African violet, are so small they only need to be set on top and not covered, as they easily nestle into the soil.
Can you grow houseplants from seed? Yes, and propagating houseplants from seeds will often result in stronger, healthier growth because they are adapted to your home’s unique conditions, such as light and humidity, from the beginning. This early houseplant seed care ensures their chances of survival are much greater than their purchased counterparts.
Houseplant seeds are not as readily available as flower and vegetable seed. Mail order catalogs and online sources are probably the easiest way of securing good quality houseplant seeds. You might also check the seed racks at your local garden center or even the big box stores in early spring when flower and vegetable seeds are on display.
Before adding the seeds, water the containers thoroughly, allowing any excess water to drain. Seed treatments to encourage germination are a recommended part of houseplant seed care, but are not strictly necessary. Experiment a bit to see which gives you the best results.
Until you see evidence of germination in your houseplant seed, care should be taken when watering. You don’t want to disturb the seed. Keep your containers out of direct sunlight but keep the medium warm.
Cuttings are probably the most common method of propagation when it comes to houseplants. Seeds are less common, yet there are a couple of good reasons for growing houseplants from seeds. Learn about them here.