On a rainy Sunday I lined up six jam jars of water on the kitchen sill and, three weeks later, had six new plants for the price of nothing. A propagation station is the highest-return project on this site — it pays you back in free plants.

What you need

  • A bright windowsill (east or west is ideal; south works if not scorching)
  • 3–6 clean glass jars or a test-tube rack
  • Pruners or sharp scissors — the snake-plant shears guide covers what to use
  • Cuttings from plants that root in water: Pothos, Philodendron, Spider Plant, Tradescantia, Peperomia
  • Optional: a tray to catch drips

No heat mat, no hormone powder. Those help; they are not required.

Prep (5 minutes)

Wash the jars. Fill them with room-temperature water left out overnight so the chlorine off-gasses (tap is fine, but fresh-from-tap can slow rooting). Pick healthy stems with at least one node — the bump where a leaf meets the stem. Roots only grow from nodes, never from a bare leaf.

Build it, step by step

  1. Take the cutting: snip a 10–15 cm stem just below a node, strip the lower leaves so only the top two or three remain.
  2. Drop it in water so the node is submerged but the leaves are in the air. This is the mistake everyone makes — leaves underwater rot and foul the jar.
  3. Line them up on the sill with a small label (plant + date) so you learn what roots fast.
  4. Refresh the water every 4–5 days. Stagnant water smells and stalls roots.
  5. Wait. Pothos roots in 7–14 days; slower types take 3–4 weeks.

Aftercare (what to do in week one and after)

Once roots are 2–3 cm long, you can pot them or leave them in water — Pothos lives in water long-term if you feed it lightly. If potting, use a gritty mix for succulents or normal soil for tropicals, and keep the soil lightly damp for the first week so the water-roots transition.

The station itself needs almost nothing: top up evaporated water, change it weekly, and move it back from the glass if a heatwave hits.

The propagation station is the one project I tell every beginner to build first, because it turns "I might kill this" into "I have six spares." Start with a Pothos you already own, label the date, and watch. Once you have spares, the kokedama ball is where the extras go.