Cryptocoryne wendtii

Overview

Cryptocoryne wendtii is one of the most popular and forgiving midground plants in the hobby. It comes in green, brown and reddish forms, tolerates a wide range of water, and thrives in low light with no CO2. Its one quirk — “crypt melt” after being moved — startles beginners, but the plant almost always regrows stronger. As a heavy root feeder it rewards root tabs with rich, wavy-edged leaves.

Planting & placement

Plant crypts in the substrate, roots down, with the crown at the surface. They are root feeders, so a nutrient substrate or gravel with root tabs suits them best. Their modest 10–20 cm height makes them ideal midground plants, filling the space between low carpets and tall background stems. Plant once and resist the urge to move them — every relocation triggers another melt. See how to plant aquarium plants for crown depth.

Light, CO2 & ferts

Crypts are happiest in low to medium light and need no CO2. The key input is root feeding: push root tabs into the substrate near the base every couple of months. A light liquid fertilizer covers water-column traces. Under very bright light the smaller-growing Cryptocoryne parva and wendtii both stay compact; in shade they grow slightly taller and greener.

Propagation & problems

Cryptocoryne wendtii spreads by underground runners, sending up daughter plants beside the parent. Once a runner plant has several leaves and roots, snip the runner and replant it elsewhere. The signature “problem” is melt, which is really just adaptation — keep parameters stable and feed the roots. True deficiencies (yellowing, holes) point to missing root tabs. Left alone in a stable tank, a crypt slowly forms a dense, self-renewing midground carpet. The green, brown and reddish varieties can be mixed for a natural, textured look, and all share the same easy care. If you ever need to move house or rescape, expect a fresh melt afterwards — it is not a setback, just the plant re-adapting to its new spot.