| Method | Best For |
|---|---|
| Division | Mature, clump-forming ferns |
| Spores | True species and rare cultivars |
| Runners | Boston fern, asparagus fern |
| Bulbils | Hen and chicks fern |
| Tissue Culture | Commercial-scale production |
| Best Season | Spring or early autumn |
The phrase how to propagate ferns sends thousands of UK gardeners online every spring. Furthermore, ferns reproduce in unusual ways compared to flowering plants. Indeed, propagating them successfully unlocks beautiful free plants for shady borders, hanging baskets, and indoor displays. For related reading see our guide on Can You Propagate Ivy.
The Main Methods To Propagate Ferns
First, division is the easiest and quickest way to multiply ferns. Furthermore, most clump-forming ferns can be lifted and split with a sharp spade. Meanwhile, each section grows into a full plant within a season or two.
Indeed, spore propagation is the most authentic but slowest method. However, it produces hundreds of plants from a single mature frond. Therefore, gardeners who want to grow rare species often choose this approach.
How To Divide A Mature Fern
Meanwhile, lift the whole plant during spring or early autumn. Furthermore, use a sharp spade or knife to cut the rootball into two or three pieces. Indeed, replant each section immediately and water well to settle the roots.
How To Propagate Ferns From Spores
Furthermore, collect ripe spores by placing a frond on white paper for a few days. Indeed, the brown dust that falls is the spore powder. Meanwhile, sow the spores onto sterile, moist compost in a covered tray.
Keep the tray at 18 to 21°C in indirect light. However, never let the surface dry out. Therefore, a clear plastic cover maintains the humidity that spore germination requires.
From Prothallus To Young Fern
Notably, the first stage of growth is a small green disc called a prothallus. Furthermore, water lightly to help fertilisation happen on this prothallus. Indeed, tiny ferns emerge from the prothallus and grow into recognisable plants over several months.
Easier Methods For Indoor Ferns
Meanwhile, Boston ferns produce runners that root into nearby pots. Furthermore, pinning the runner into soil starts a new plant within weeks. Indeed, the hen and chicks fern grows tiny plantlets on its fronds that can be detached and rooted.
These easier methods work for popular houseplant species. However, true species ferns usually require spores. Therefore, knowing your plant type guides the right approach.
The Future Of Fern Propagation
Interest in ferns has surged thanks to indoor plant culture. Furthermore, social media gardeners share spore propagation videos that demystify the process. Meanwhile, commercial nurseries use tissue culture to produce large numbers of identical plants. Indeed, the knowledge gap that once made ferns mysterious is closing fast.
Ultimately, learning how to propagate ferns rewards patient gardeners with free plants. So pick the easiest method first and graduate to spores once you have the confidence. You may also enjoy our piece on How To Propagate Acers.
