How to Water Lisianthus Seedlings

Lisianthus is a gorgeous bloom that just needs a little extra TLC. We start many of our plants from seed, but some arrive as tiny plant babies called plugs.

To keep them hydrated and healthy, we use a simple bottom-watering method that encourages strong root development. It’s easy, effective, and works whether you’re growing a few trays in your garden or hundreds for a cutting field.

I recently shared a video across our social channels showing exactly how I water our lisianthus seedlings. Below is the same process we use here on the farm.

Lisianthus seedlings behave a bit differently than many other flowers. Early on they grow slowly, which means they don’t use water very quickly. If the soil stays constantly wet, it can lead to stalled growth or root rot. They also prefer to keep their foliage dry, since wet leaves and crowns can increase the risk of fungal disease. Because of this, we’ve found bottom watering to be the best approach.

When it’s time to water, I fill a wheelbarrow with about five gallons of water and add half a cup of fish fertilizer. The fish fertilizer provides a gentle nutrient boost while the seedlings are developing their root systems.

Next, I submerge the tray of lisianthus plugs into the wheelbarrow, making sure each cell gets submerged so the soil can absorb water from the bottom. The trays only stay in the water long enough for the cells to fully saturate.

Once they’re done soaking, the trays go onto a shelf to drain completely. From there, we allow the soil to dry out before watering again.

That wet-dry cycle is one of the keys to growing strong lisianthus. Allowing the trays to dry between waterings encourages healthy root growth and helps prevent disease.

Lisianthus seedlings sometimes get a reputation for being difficult, but in many cases success simply comes down to watering. Using this simple submersion method keeps the roots happy, and the plants growing strong.

Happy growing!

XX Jenn