Spider plants are one of the easiest indoor plants to propagate. They’re so easy that most online guides over-complicate the method. Here’s the version that actually works, stripped of the fuss.

The plant produces babies — small plantlets — on the long stems it sends out when it’s healthy. These plantlets are the propagation material. Wait until the plantlet has visible aerial roots, generally a few centimetres long. The plantlet doesn’t need to be enormous; a 5-7cm plantlet with a few small roots is plenty.

There are two methods that work reliably. The first: cut the plantlet from the parent stem with clean scissors, leaving 1-2cm of stem above the plantlet. Plant directly in damp potting mix. Water gently, keep in bright indirect light, and wait. Most plantlets root within 2-3 weeks. The success rate on this method is over 90% if the plantlet had visible roots before separation.

The second method: water rooting. Place the plantlet (still attached to the parent or detached) in a small jar of water with the aerial roots submerged. Change the water every few days. After 2-3 weeks, the roots will have grown longer and developed water-rooted morphology. Transfer to potting mix at this point. The plant will go through a brief adjustment as the water roots adapt to soil conditions.

Both methods work. Direct-to-soil is faster but requires keeping the soil consistently damp during the rooting period. Water rooting is more visible and slightly more forgiving on inconsistent care. For propagating multiple plantlets at once, direct-to-soil is more practical. For propagating a single plantlet you want to watch root, water rooting is more satisfying.

What people get wrong: separating plantlets too early before any aerial roots have formed, putting them in dry soil and forgetting to water, using overly rich potting mix (which spider plants don’t need and can actually struggle with), and giving up too soon when the plant looks droopy in the first week (it usually recovers).

The parent plant’s response: spider plants will produce more plantlets when they’re slightly pot-bound. A spider plant in a too-large pot puts energy into growing roots and leaves rather than making babies. A spider plant that has filled its pot, with roots visible at the surface, will reliably produce stems and plantlets. Don’t rush to repot.

Light conditions matter for plantlet production. Spider plants in low light produce fewer plantlets, even when the plant looks healthy. Moving the parent to a brighter spot — bright indirect light, not direct sun — generally increases plantlet production within a few months.

The fertilising question: spider plants are sensitive to fertiliser excess. Brown leaf tips are usually a sign of either fertiliser buildup or fluoride sensitivity (Australian tap water is generally fluoridated, and spider plants are among the more sensitive species). Light fertilising once a month during active growth is plenty. Filtered water or rainwater for fussier plants helps with the brown-tip issue.

For Australian indoor plant collectors, spider plants are one of the genuine reliable performers. The variegated varieties are slightly slower to propagate than the solid green forms, but the method is the same. The all-green form is sometimes considered less attractive but is generally hardier and recovers from neglect more reliably.

The best way to build a collection: take a single plantlet from a friend’s healthy plant, root it, grow it out for a year, then propagate from the now-mature plant when it produces its own babies. Within two years from a single starter plantlet, you can easily produce a dozen plants for swapping with other indoor plant friends. This is how a lot of Australian house-plant collections actually grow, and it’s better than buying plants from chain hardware stores where the variety quality is inconsistent.