The houseplants South Africans actually propagate

Walk into a garden centre in Cape Town, Joburg or Durban and you will see roughly the same twenty plants. Delicious monster, snake plant, ZZ, pothos, philodendron 'Hope', rubber plant, spider plant, peace lily, a wall of clivias in season. The prices differ, the stock does not.

Which is useful, because it means a short list covers most of what people actually have on a shelf and want more of. Here is that list, with honest timelines for South African conditions rather than the ones written for a heated greenhouse in the northern hemisphere.

First, find the node

Almost everything below hinges on this, so it is worth a paragraph.

A node is the slightly thickened point on a stem where a leaf joins it. It is where the plant keeps the dormant bud and the cells that can turn into roots. A length of stem with leaves but no node will sit in water indefinitely and then rot. A short stub with one node and one leaf will root.

On pothos, philodendron and monstera the node is obvious once you know: look for the small brown nub or stubby aerial root sticking out opposite or just below a leaf join. That nub is the plant telling you where the roots go. On a delicious monster it can be a finger-thick brown stump. Do not trim it off.

Cut a centimetre or two below the node so the stem has a bit of stem to sit in the water. Strip any leaf that would end up submerged. Submerged leaves rot, and rot spreads.

Four steps, no special kit. Find a node, strip the low leaves, stand it in water and wait.

The easy ones

Pothos (Epipremnum aureum). The default. Every node roots. Two to three weeks in a warm Highveld or Durban summer, five to eight weeks in an unheated Cape room in July. You can cut a long trailing vine into six single-node pieces and get six plants, though they take longer to look like anything than one four-node cutting does.

Tradescantia. Faster than pothos. Often visible roots in under a week in summer. One caveat worth knowing: two of the common species are listed invasives in South Africa and have escaped into forest and streambank habitat. Enjoy it indoors, but do not tip trimmings or propagation water over a wall or into garden refuse headed for a municipal heap. Stem fragments root, which is precisely the problem.

Philodendron. Both the trailing heart-leaf and the big 'Hope' type root from a node. Slightly slower than pothos — three to four weeks warm, six to ten cold.

Spider plant (Chlorophytum comosum). Not really a cutting job. The plantlets on the runners come with root nubs already formed, so a week in water is enough to get them going. It is also, quietly, an indigenous plant — it grows wild from Swellendam up to the Soutpansberg.

Money plant / Swedish ivy (Plectranthus verticillatus). Also indigenous, from Knysna to Limpopo. Roots in about a fortnight in warm weather and is nearly impossible to kill at the cutting stage. It is much fussier once potted — it hates being kept wet.

The medium ones

Delicious monster (Monstera deliciosa). Cut 25 to 50 mm below a node, keeping any aerial root attached. Roots in about two to four weeks in warm conditions. Then be patient: a rooted node can take another two to three months before it pushes its first leaf, and that leaf will be small and unsplit. This is normal and not a sign you have done anything wrong.

Worth knowing that water roots are weaker than roots grown in a solid medium, so pot up once the roots are three to five centimetres rather than leaving the cutting in the glass for six months because it looks good. It does look good. Pot it up anyway.

Begonia and Streptocarpus. Leaf propagation rather than stem. A Streptocarpus leaf, cut and set in a moist medium, forms plantlets at its base over one to three months, and the plantlets are ready to pot at six to twelve months. Slow, but the Cape primrose is worth it and it is a local plant.

Rubber plant (Ficus elastica). Possible from a stem cutting with a node, but it bleeds white latex, which needs to be rinsed or blotted before the cutting goes in water, and it wants real warmth. Better done in January than July, and better done by air-layering the stem if you want a plant with any size to it.

The stubborn ones

Snake plant (Sansevieria, now Dracaena trifasciata). Leaf sections do root, in water or sand, but slowly — think two to three months before anything appears, longer in winter. The important thing: the variegated cultivars, including the common 'Laurentii' with the gold edges, lose their variegation when grown from leaf cuttings. The colour is a chimera and does not carry through. If you want the stripes, divide the clump at the root instead. That is a five-minute job with a bread knife and it works immediately.

ZZ plant (Zamioculcas zamiifolia). The slowest thing on this list. A leaf cutting forms a small rhizome first and roots after that. Professional growers get rhizomes in about four weeks at around 26°C; at home the usual figure is up to nine months or more. It is not difficult. It just requires you to forget about it for most of a year. Division of an established clump is far quicker.

Fiddle-leaf fig. Same category as the rubber plant. Warmth, patience, and better odds in midsummer.

Peace lily, clivia, strelitzia. These do not propagate from cuttings at all. Peace lilies and clivias are divided; strelitzia is divided or grown from seed, and from seed it is a multi-year commitment. If someone tells you they rooted a clivia leaf, they did not.

Where you live changes the answer

The same cutting behaves differently in three South African cities, and this is the part that generic guides never mention.

Durban and the KZN coast. Best propagating conditions in the country. Winter minima around 11°C, maxima around 24°C, and a dry mild winter rather than a cold one. Cuttings root nearly year-round. The main risk is fungal rot in the humid summer, so keep water fresh and give the stems some air.

Johannesburg and the Highveld. Warm summers with rain from October to March, and genuinely cold, very dry winters — July averages around 4°C overnight and 18°C by day, with light frost on the outskirts. Cuttings stall badly from May to August, and the low winter humidity means unrooted cuttings lose water fast. Indoors, away from the window at night, is essential.

Cape Town and the Western Cape. The opposite problem. Mild but wet, with about 85 mm of rain in July across ten days, damp interiors and poor insulation. Not cold enough to freeze anything, cold enough to halt everything. Rot rather than desiccation is the winter risk here.

Rough rule: whatever a British or American guide tells you about timing, invert the months. Their April is our October.

Water, and when to stop

Change the water every few days if it turns murky, or just top it up as the level drops. No fertiliser — an unrooted cutting cannot use it and it only feeds the algae. Keep the glass out of direct midday sun, which cooks roots and grows green slime, but in decent bright light, because the leaf still has to earn its keep.

Pot up when the roots are three to five centimetres and starting to branch. Expect a fortnight of sulking while the plant rebuilds roots suited to soil. Water a little more attentively than usual during that fortnight, then treat it as a normal plant.

The one thing that catches people is leaving cuttings in water for months because the jar looks nice on the shelf. That is a fair reason, and the propagation stations exist partly because of it. But a monstera node that has been in a tube since March has thin, brittle roots and no new leaf, and it will do better in a pot.

Roots take their time. Then, eventually, they want soil.