Propagating Shinnersia rivularis (Mexican Oak Leaf) from Cuttings

How to propagate the Mexican Oak Leaf by topping and replanting cuttings. This robust, fast-growing low-tech stem plant branches readily and is one of the easiest backgrounds to multiply.

Overview

Shinnersia rivularis, the Mexican Oak Leaf (the 'Weeping' form is widely sold), is a robust, fast-growing stem plant from Mexico with distinctive oak-shaped leaves. It is very easy to grow, tolerates low-tech tanks, and makes an excellent background plant.

Like other vigorous stem plants it is forgiving and branches readily, so it is propagated by cuttings. Topping the plant both controls its height and produces new plants while the base bushes out below the cut.

Propagation Method (Cuttings)

Mexican Oak Leaf is propagated by topping. Cut off the top few centimetres of a stem and plant the cutting directly into the substrate; new buds and roots grow from the internodes. The trimmed parent stem responds by sending out side shoots, giving you a denser group over time.

Step-by-Step

Select a strong stem and cut off the top 5-10 cm, just above a leaf node.
Strip the leaves from the lowest 2-3 cm of the cutting.
Push each cutting 3-5 cm into the substrate so it stays anchored.
Space cuttings apart with a little room between them rather than bunching them tightly.
Keep the parent stem; it will branch from the cut node into a fuller clump.

Conditions for Healthy Growth

This is a true low-tech plant: it grows under medium light without CO2, accepting a wide range of conditions. It tolerates temperatures of 18-28 C, pH 6-8, and a broad hardness range, and is not fussy about substrate. Brighter light keeps growth compact and can bring out cream or white margins on variegated forms.

Light: medium; brighter light gives more compact growth and stronger variegation.
CO2: not required; tolerant of low-tech setups.
Temperature 18-28 C, pH 6-8, GH 3-15.
Can be grown emersed; switches to submersed growth in the aquarium.

Trimming & Maintenance

Trim roughly weekly when conditions are good, as this plant grows fast. Top the stems before they reach the surface, replant the best tops, and let the bases rebush. Frequent trimming keeps the group dense and prevents the lower stems from being shaded out and dropping leaves.

Common Challenges

Initial melting after planting is common, especially with emersed-grown stock, but the plant usually recovers and pushes new submersed growth. Bare lower stems mean the group is too dense or under-lit, so thin it and replant the healthiest cuttings. Floating cuttings simply need to be planted more deeply.