San Pedro Cutting Bridgessi Cactus 25cm

1. San Pedro Cutting Bridgesii Cactus 25cm

A 25 cm cutting of Trichocereus bridgesii, the Bolivian torch, hand-selected from strong mature mother plants. The most distinctive-looking of the three San Pedro types: fewest ribs, longest and most irregular spines, and a sprawling habit rather than a tidy column.

It arrives pre-calloused. We dry and callous each cutting for seven to ten days before dispatch, which means it can go straight into soil rather than sitting on a shelf for a fortnight first.

That single detail is the difference between this and an ordinary cutting, and section 3 explains why it matters as much as it does.

2. Specifications

3. Pre-callousing

A fresh cutting is an open wound, and what happens to that wound decides whether you get a plant or a rot:

1. An uncalloused cut face takes up water it cannot process. Put one straight into damp soil and the base begins to rot before roots have any chance to form. This is far and away the commonest way a cutting is lost.
2. Callousing is simply drying. Left dry, warm and airy, the cut surface hardens into a pale, firm layer across its whole face. Seven to ten days is typical; warmer and drier is faster.
3. Doing it yourself means waiting. A fortnight of a cactus standing on a shelf while you resist the urge to plant it, and the risk that you do not resist.
4. Pre-calloused means it is already done. The cutting can go into soil on the day it arrives, which removes both the wait and the commonest failure point.
5. Check it anyway. The cut face should be dry and firm across its full width with no soft or discoloured centre. If anything looks wrong, leave it another week and tell us.

3.1 Why bridgesii specifically

• It is the toughest of the three. The most tolerant of cold and drought once established, which suits an unheated greenhouse.
• It is the most striking. Long irregular spines and a leaning, sprawling habit that looks nothing like a garden-centre cactus.
• Fewest ribs — typically four to eight, against six to nine for the others, which is the quickest way to identify it.
• And it is the same species as our seeds, years further along. A cutting skips the fragile seedling stage entirely.

4. Planting and care

4.1 On arrival

1. Unpack and inspect. The cut face should be dry and firm. Surface marks from transit are normal.
2. Plant shallow — two to three centimetres into a gritty, free-draining mix, upright, with support if it will not stand square.
3. Then wait a week to ten days before the first watering. Roots form in dry conditions; water too early and the base rots instead.
4. Water once, thoroughly, then let it dry out completely before the next.
5. Build up the light over two to three weeks. A cutting out of a dark box will scorch in full sun.

4.2 Ongoing

• Soil: free-draining and gritty. A cactus mix cut with extra pumice, perlite or coarse sand. Trichocereus tolerates organic content better than Lophophora and still hates sitting wet.
• Water: soak and dry through the growing season, roughly every one to two weeks in summer depending on heat and pot size. Never on a schedule.
• Winter: dry, bright and frost-free from October. Watering a dormant column is how they rot at the base.
• Feeding: a dilute cactus feed through the growing season only.
• Support: a fast-growing column gets top-heavy. A cane is sensible rather than an admission of failure.

It arrives pre-calloused, which removes the fortnight of waiting and the commonest way a cutting is lost.