Cryptocoryne undulata
Cryptocoryne undulata
Cryptocoryne undulata is a classic and dependable Sri Lankan Crypt producing wavy-margined leaves in warm olive-green to brownish tones that bring natural, earthy character to the midground of the planted aquarium. The characteristic wavy leaf margins are the defining feature of this species — giving each leaf an organic, undulating quality that creates subtle but pleasing visual texture and movement in the aquarium.
Care tip: Cryptocoryne undulata may experience some leaf melt when first introduced to a new aquarium — this is a normal acclimation response and the plant will recover fully once established. A nutrient-rich substrate and stable water parameters minimize this response and support the best long-term growth.
Like all Cryptocoryne, undulata is a rosette plant that benefits from a nutrient-rich substrate and stable conditions. The chart confirms it as hardy with wavy leaf margins, good for mid to low-tech setups — a direct and accurate description of this time-tested Sri Lankan species. Initial leaf melt upon introduction is possible but typically brief and mild for this resilient Crypt. Once established, undulata holds its position reliably for years.
Cryptocoryne undulata is an easy plant that requires no CO₂ supplementation and grows well under low lighting. Temperatures between 72 and 82°F and a pH of 6.0 to 7.5 provide comfortable conditions. Regular fertilization maintains the warm leaf coloration and supports steady new leaf production from the established rosette. The wavy leaf character is most fully expressed in plants with consistent substrate nutrition.
In the aquascape, Cryptocoryne undulata provides warm, wavy-leaved midground structure that suits a wide range of planted tank styles. The wavy leaf margins create natural organic texture that contrasts gently with smooth-leaved plants and adds visual rhythm to mixed plantings. It is a natural companion to Java Fern, Anubias, and other classic low-tech plants in community and biotope setups.
Cryptocoryne undulata is a classic, reliable, and naturally beautiful midground Crypt that has served the planted aquarium hobby well for decades. Its wavy leaves, warm colors, and easy care make it a timeless and trustworthy planted tank companion.
Care & Specifications
| Difficulty | Easy |
| Placement | Midground |
| Max Height | 8–12 inches |
| Light Level | Low |
| Temperature | 72–82°F |
| pH | 6.0–7.5 |
| CO2 Needs | Not Required |
| Origin | Sri Lanka |
| Notes | Hardy crypt with wavy leaf margins. Good for mid to low-tech setups. |