Cryptocoryne Wendtii Green, sometimes listed as Cryptocoryne undulata in the hobby (the two are closely related and often sold interchangeably at this leaf form), is one of the most planted and most reliably successful Cryptocoryne species available -- a rosette plant with long, narrowly oval to lance-shaped leaves with distinctly undulating, wavy margins that give each leaf a gently ruffled profile along its length. The colour is a consistent medium to olive green on the upper leaf surface, sometimes with subtle brownish toning on the lower surface in established plants under higher light. It is one of the few aquarium plants that genuinely adapts to the full range of light conditions from low to high without significant change in care demands -- growing more slowly under low light and more vigorously under high, but performing attractively at every point in between. It roots into substrate rather than attaching to hardscape, provides continuous biofilm surface area on its broad leaf faces, and is fully safe with all Neocaridina, Caridina, and snails.
Not RequiredCO2
68-82FTemperature
Low-HighLighting
What to Expect
Growth, Adaptation and Character
Crypt melt on introduction is normal -- do not discard the plant -- the most important thing to know about introducing any Cryptocoryne is that crypt melt -- the rapid softening and dissolution of existing leaves on introduction to a new tank -- is a normal and expected response to the change in water chemistry, light, and temperature conditions. It is not a sign of death or failure. The rhizome and roots survive and produce new leaves adapted to the actual tank conditions within two to four weeks. New leaves are almost always healthier and more vigorous than the original ones. Do not remove the plant during melt -- leave it in place, do not bury the rhizome, and wait.
Long, undulating leaves with a gently ruffled profile -- the leaves of Wendtii Green are elongated and narrow with distinctly wavy, undulating margins along their length -- a leaf profile clearly different from the flat leaves of Anubias or the broad, corrugated leaves of some other Crypt species. The undulation is most pronounced on mature, fully established leaves in stable conditions; newly emerging leaves after melt or in the first weeks of establishment are often smaller and less fully undulated than leaves produced by a settled plant.
Adapts to low through high light -- slower under low, faster and larger under high -- unlike many aquarium plants that have a narrower optimal light window, Wendtii Green produces attractive growth across the full light range typically found in planted tanks. Under low light it grows slowly with smaller, more upright leaves; under medium to high light it grows faster with longer, more dramatically undulating leaves that spread further from the centre of the rosette. The same plant species genuinely looks different under different light conditions -- the low-light form is compact and upright, the high-light form is broad and spreading.
Roots into substrate -- a nutrient-rich substrate or root tabs accelerate establishment -- unlike rhizome plants that draw nutrition from the water column, Crypts feed primarily through their root system and respond more clearly than most plants to substrate nutrition quality. In nutrient-rich aquasoil or with root tabs placed 5-6cm from the planting site, established plants produce larger leaves and more vigorous growth than in inert substrate without supplementation.
Biofilm accumulates on broad leaf surfaces -- shrimp graze actively -- the broad, long leaf surfaces of established Wendtii Green accumulate biofilm that shrimp graze on continuously. An established Crypt rosette in a shrimp tank is regularly occupied by multiple shrimp working across the upper and lower leaf surfaces -- a foraging behaviour that makes the plant one of the most engaged-with surfaces in the tank.
Long-lived -- improves continuously over months in stable conditions -- like all Cryptocoryne, Wendtii Green grows slowly but improves continuously over months and years in stable conditions. A one-year-old established Wendtii Green plant in a well-maintained tank is substantially more impressive than a newly introduced one -- larger, more fully undulated leaves, a fuller rosette, and a well-developed root system that anchors it firmly and supports continuous new leaf production.
How to Set It Up
Getting Started
1Plant with roots spread outward and crown just above substrate -- bury only the roots and the base of the stem in substrate -- the growing crown where new leaves emerge must remain visible and in contact with open water, not buried. Planting too deeply is the most common setup error with Crypts and delays establishment significantly.
2Place root tabs 5-6cm from the planting site before introducing the plant -- push a root tab into the substrate at one or two points around the planting site before planting. The root system reaches these nutrition zones within two to four weeks of establishment and benefits from them continuously. Renew root tabs every three to four months.
3Do not disturb during crypt melt -- leave the plant in place -- if melt occurs on introduction, remove the softened leaf material as it dissolves to prevent water quality impact, but leave the rhizome and root system undisturbed in the substrate. New leaves adapted to tank conditions emerge from the rhizome within two to four weeks.
4Any light level works -- adjust expectations accordingly -- Wendtii Green performs at every light level. Choose the light intensity that suits the rest of the tank and allow the plant to adapt -- it will produce the leaf form appropriate to the available light rather than failing if the light is not optimised specifically for it.
Bonus TipA grouping of three to five Cryptocoryne Wendtii Green plants at staggered sizes -- one large established rosette as the centrepiece with two or three smaller plants at different growth stages around it -- creates the most naturalistic Crypt arrangement and mirrors the growth habit of established Cryptocoryne in their natural habitat, where plants of different ages grow in loose clusters. The size variation within the group reads as more composed and intentional than a single specimen or a row of identically sized plants.
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Browse more aquatic plantsPair Wendtii Green with other Cryptocoryne species, Anubias, or Java Fern for a complete low-light planted setup. Browse our Aquatic Plants collection.
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