Cryptocoryne Hudoroi care guide
Cryptocoryne Hudoroi (Cryptocoryne hudoroi) — medium light, 23-28 °C, pH 5.5-7, no CO2.
Compiled by Aquairi from published sources · Published · Updated
Overview
Cryptocoryne Hudoroi (Cryptocoryne hudoroi) is a broad-leaved plant of the family Araceae, grown as an aquarium plant. Borneo crypt with rugose, deeply bullate dark-green leaves and reddish underside. Forms an impressive solitary specimen for the midground; benefits from soft, slightly acidic water.
Taxonomy
- Family: Araceae
- Genus: Cryptocoryne
- Scientific name: Cryptocoryne hudoroi
Habitat
Cryptocoryne species inhabit slow-flowing forest streams, peat-swamp creeks and seasonally flooded lowlands across South and South-East Asia. Most grow rooted in soft mineral or organic sediments under partial shade. In the Aquairi knowledge base this species is recorded from Borneo.
Growth requirements
- Lighting: medium
- CO2: not required
- Temperature: 23-28 °C (73-82 °F)
- pH: 5.5-7
- GH: 2-10 °dGH
- Substrate: aquasoil
- Maximum height: 25 cm
- Growth rate: slow
- Nutrient demand: medium
- Recommended placement: midground
Placement
In aquascapes this plant suits the midground. It is planted into a nutrient-rich substrate; emersed-grown stock often melts after submersion and regrows submersed leaves within weeks. Stable parameters minimise repeated melt.
Propagation
This species is spreads vegetatively by runners that form daughter plants on the substrate; clumps are divided once the colony has filled the area.
Common issues
Sudden parameter shifts, particularly temperature drops or large water changes, trigger so-called Crypt melt in which existing leaves dissolve while the rhizome regrows new ones; stable conditions prevent repeat events.
Propagating Cryptocoryne hudoroi: Runners and Division
Overview
Cryptocoryne hudoroi is a rosette crypt from Kalimantan, Borneo, prized by hobbyists for its deeply bullate, textured leaves. It grows in limestone streams, which shapes its preference for calcium. Aquarists report it is one of the bullate-leaved crypts that adapts comparatively well to submerged growth, though detailed cultivation information remains scarce.
Propagation Method (Runners / Division)
Like other Cryptocoryne, C. hudoroi reproduces vegetatively underwater, sending out runners (stolons) through the substrate that each form a daughter plantlet. A mature clump can also be lifted and split at the rhizome into rooted sections. It is commonly grown emersed in commercial culture, where it spreads the same way before being converted to submerged growth.
Step-by-Step
- Establish the mother plant in calcium-rich, slightly acidic conditions and let it root for at least a month.
- Wait for runners to push through the substrate and form daughter plantlets with their own roots and several leaves.
- Sever the runner cleanly between mother and daughter, or lift the clump and divide the rhizome into rooted pieces.
- Replant each plantlet in aquasoil with added calcium, such as crushed coral, burying roots but leaving the crown exposed.
- Keep parameters stable and lighting moderate while the new plants settle.
- Allow roughly 30 days of undisturbed time for the plantlets to root in.
Conditions for Healthy Growth
Reflecting its limestone-stream origin, C. hudoroi does best with adequate calcium and stable, slightly acidic water; aquarists find it grows fairly easily in tap water with plenty of calcium, and recommend adding crushed coral if the water is soft. It is a root feeder that benefits from a rich aquasoil bed under medium light. CO2 is not strictly required but stable conditions matter most.
Maintenance
Remove old or damaged outer leaves at the base and thin the clump by harvesting runners. Avoid frequent uprooting, and keep calcium and pH steady to preserve the prized bullate leaf texture.
Common Challenges
Crypts adapt poorly to transplantation and may need about 30 days to become established, so plan moves carefully. Drops in calcium or swings in pH are common triggers for melt in this limestone-stream species, so prioritize stability.
Propagating Cryptocoryne hudoroi 'Red'
Overview
Cryptocoryne hudoroi 'Red' is a red-toned form of the rare bullate crypt C. hudoroi, which is native to Kalimantan on the island of Borneo and grows there in limestone streams. The genus as a whole lives in lowland-forest streams and rivers with gentle flow, and hudoroi behaves as a slow-growing, root-feeding rosette crypt.
Because the wild habitat is limestone, calcium and pH are key to success; growers report it grows well emersed in tap water around pH 7.8 with average calcium hardness. Submerged crypts reproduce vegetatively, so propagation depends on the runners and divisions of an established mother plant rather than cuttings.
Propagation Method
Hudoroi is a rosette plant, so it is multiplied by letting it spread and then dividing it — never by topping or cutting leaves.
- Runners: like other crypts, hudoroi propagates via runners, and the new plants will settle at the depth they like best.
- Rhizome division: a clump with several crowns can be lifted and separated into rooted pieces, each keeping part of the rhizome.
Step-by-Step
- Grow the mother plant undisturbed until it produces runners with their own leaves and roots; with this slow species this can take a while.
- Lift the clump carefully and rinse away substrate so the rhizome and separate crowns are visible.
- Detach rooted daughter plants or cut the rhizome into sections, leaving healthy roots on each.
- Replant in a calcium-rich, nutritious substrate, burying the roots while keeping the crown exposed; add crushed coral if your water is low in calcium.
- Give each piece its own space and keep light moderate so the red colour develops without forcing growth.
Conditions for Healthy Growth
Provide a nutrient-rich substrate with adequate calcium, since this limestone-stream species responds strongly to calcium and pH. It is a slow grower and CO2 is not mandatory; medium light helps bring out the brick-red colouring. Growers note hudoroi can be reluctant emersed and often does better fully submerged once settled.
Maintenance
Keep water stable and calcium-replete, top up root tabs in the substrate, and resist the urge to move the plant once it has rooted. Multiply slowly by removing the occasional runner plantlet rather than by repeated disturbance of the parent.