A small bench, a serious habit.

Dexter Leaf Co is a one-grower operation making mineral substrates for the plants we’re obsessed with — and named for the black-and-white pointer who sat under the grow shelf. It started, as these things do, with one too many anthuriums and one too many cases of root rot. Soil held water in all the wrong ways; the fix was Pon, a bed of porous mineral stone that drains hard, breathes well, and lets you read exactly what the roots are doing.

Hi — I’m Mark. I’m not a manufacturer; I’m a collector who got tired of compromising on substrate. It was imported, slow draining, and pre-loaded with fertiliser I didn’t want. So I started blending my own — sourcing pumice, zeolite and lava rock, dialing in a ratio over a lot of repottings, and weighing every batch by hand. The same Drainage Plus blend that’s under my anthuriums is the blend that ships to you.

Our one rule: keep the substrate pure. We don’t bake slow-release fertiliser into the mix, because the moment you do, you take the decision away from the grower. Pon is inert on purpose — you control the feed, the strength, and the schedule.

Coming next: a small line of tissue cultures, rare aroids, and cuttings off our own mother plants, released in tiny drops to the mailing list first.