Hydroponic Bucephalandra: Buce on Rock With Roots in Water
Hydroponic bucephalandra is buce grown emersed, with its creeping rhizome tied to rock or wood so roots reach shallow water while leaves sit in humid air.
The short answer
Growing hydroponic bucephalandra means attaching the rhizome to a rock so roots reach shallow water while leaves stay in humid air. UF/IFAS notes some aquatic plants use rhizomes to anchor. Do not bury the rhizome. Leave the cover loosely on, give bright light plus change water every 2 to 3 weeks.
Can bucephalandra grow out of water?
UF/IFAS notes emergent aquatic plants develop most of their leaves above the water plus need very little water below them. It also notes some aquatic plants have modified stems called rhizomes that anchor them to the substrate. Buce grips rock with its rhizome the same way.
What setup suits emersed bucephalandra?
Tie or wedge the rhizome onto a stone or wood piece set in a jar or tray. Roots must reach water while the rhizome sits above it. CSU Extension advises setting the crown of marginal plants just above the soil surface, plus the same idea applies to a rhizome on rock.
| Factor | Target | Tip |
|---|---|---|
| Water depth | Very little water, about 2 inches for emergent plants | Leaves grow above the surface (UF/IFAS) |
| Light | Significant light for tropical plants | Add a lamp indoors (UF/IFAS plus UC) |
| Media | Inert coir, perlite or vermiculite | Supports roots (UC Master Gardeners) |
| Solution | Replace every 2 to 3 weeks | Mix at the stated rate (Illinois) |
| Nutrients | Low | Avoid overfeeding to limit algae (UF/IFAS) |
Source: UF/IFAS Extension, UC Master Gardeners of Orange County plus University of Illinois Extension.
How much light does emersed bucephalandra need?
UF/IFAS notes most freshwater ornamental aquatic plants are tropical plus need a warm climate with significant light. Illinois Extension notes foliage plants can get by on a little less light than fruiting crops. Give buce bright indirect light or a lamp, plus shield a closed jar from hot direct sun.
How to: step by step
- Buy a vigorous bucephalandra from a plant shop.
- Rinse the roots plus trim any mushy parts.
- Tie the rhizome to a rock or wood piece.
- Set it in a jar with water just below the rhizome.
- Cover loosely to hold humidity.
- Place under a bright light plus top up water weekly.
Troubleshooting
Leaves die back after the move: the plant is adjusting. Trim soft leaves plus wait for new emersed growth.
Slimy roots: stale water. Change the solution plus rinse.
Soft rhizome: it sits buried or under water. Raise it above the media or water line.
Green film coating the rock: algae. UF/IFAS notes high nutrients feed algae, so feed less.
For more on soilless growing read hydroponic in different mediums plus caring for your hydroponic system. Water quality notes are in aquarium water for cannabis. Kind Seed Co also stocks cannabis seeds.
Sources
- Freshwater ornamental aquatic plant production in Florida (FA251), UF/IFAS Extension
- Water gardens: planting aquatic plants (PlantTalk 1026), Colorado State University Extension
- Hydroponics for the home gardener, UC Master Gardeners of Orange County
- Home hydroponics handouts, University of Illinois Extension
FAQ
How much water does an emersed plant need?
UF/IFAS notes emergent aquatic plants need very little water, about 2 inches, but need more space above the surface because most leaves form in the air. CSU Extension notes most marginal plants grow well with 1 to 4 inches of water over the crown.
Should the bucephalandra rhizome be buried?
UF/IFAS notes rhizomes are modified stems that help aquatic plants anchor to the substrate. CSU Extension advises setting the crown of marginal plants just above the soil surface. For buce that means resting the rhizome on rock or media with roots reaching down into the water.
Does emersed bucephalandra need fertilizer?
UF/IFAS notes some species need added fertilizer. It also notes high nutrient levels feed algae, so use a light hand.
How often should the water be changed?
University of Illinois Extension advises replacing the nutrient solution every 2 to 3 weeks in home hydroponic systems. Between changes UC Master Gardeners advise checking the water level, nutrient levels plus pH, since a root problem can spread quickly through a shared solution.
What should be done with trimmings?
UF/IFAS notes some non native aquatic plants are invasive because they spread in the wild. Put trimmings in the trash or compost. Never drop them in ponds, ditches or streams.
