Rotala H'raの育て方・育成ガイド
Rotala rotundifolia 'H'ra' · Lythraceae
Rotala H'ra（Rotala rotundifolia 'H'ra'）は水草です。 Lythraceae科に属します。 原産地はA trade form of Rotala rotundifolia collected near the hamlet of H'ra, Gia Lai, in Vietnam's Central Highlands; the species grows in rice paddies and marshes across South and East Asiaです。 光量はmedium to highを必要とします。 適正水温：22°C – 28°C。 適正pH：6.0 – 7.5。 育成難易度：Moderate。 生長速度：fast。
Rotala H'raの育て方・育成方法は？
| 光量 | Medium to High (medium keeps it alive; strong light is what brings out the orange-red — it stays mostly green under weak light) |
|---|---|
| CO₂ | Recommended (sources range from medium CO₂ demand to “mandatory for colour”) |
| 水温 | 22°C – 28°C |
| pH | 6.0 – 7.5 |
| 配置 | Midground in dense bushes; kept low it can form an orange cushion toward the foreground |
| 生長速度 | Fast |
| 難易度 | Moderate |
| 科名 | Lythraceae |
Rotala H'raのトリミングや増やし方は？
Top the stems or side shoots once they reach the height you want; cutting just above a node makes the stem branch into a denser bush. Growth arches toward horizontal, so trim often so the canopy does not shade the base. Propagate by replanting the cut tops and side shoots (strip the lowest leaves and set stems individually a few cm apart).
Rotala H'raによくあるトラブルや病気は？
Bare lower stems from too little light at the base (crowding or shading by taller plants); stays green or pale from low light, CO₂ or iron; stems melt after planting from unstable water or the switch from farm-grown emersed to submersed growth; stunted tips and yellow or dead leaves from low nitrate, iron/trace shortage or low CO₂.
Rotala H'raのトラブルや枯れへの対処法は？
Thin and space the stems and top them more often; raise light and add CO₂ plus trace/iron dosing; keep parameters stable and accept some loss of emersed leaves while submersed growth forms; correct fertiliser and CO₂. Aquasoil or root tabs help on an inert substrate.
Rotala H'raの原産地や生息地は？
A trade form of Rotala rotundifolia collected near the hamlet of H'ra, Gia Lai, in Vietnam's Central Highlands; the species grows in rice paddies and marshes across South and East Asia
Rotala H'raを購入する前に知っておくべきことは？
The species Rotala rotundifolia is invasive in southern Florida (FLEPPC Category II): it escaped from the aquarium and water-garden trade, forms dense mats and spreads from fragments. Never discard trimmings into natural waters.
出典
- Rotala rotundifolia (Buch.-Ham. ex Roxb.) Koehne - World Checklist of Vascular Plants (WCVP, Royal Botanic Gardens Kew) via GBIF — Royal Botanic Gardens, Kew / GBIF
- Rotala rotundifolia "H'Ra" ("Gia Lai") — Flowgrow Aquatic Plant Database
- Rotala rotundifolia 'H'ra' — Tropica Aquarium Plants
- Rotala H'Ra - Aquarium Stem Plant — Buce Plant
- Care Guide: Rotala H'ra — Hygronature
- Rotala Rotundifolia Care Guide — Shrimp and Snail Breeder
- Rotala rotundifolia — Tropica Aquarium Plants
- SS-AGR-376/AG381: Rotala: A New Aquatic Invader in Southern Florida — UF/IFAS Extension
育成情報は 2026-09-23 にこれらの出典と照合しました。
Rotala H'raが使われるレイアウトや水槽は？
- 水草水槽における照明・CO₂・肥料のバランス調整
- Dutchスタイル水草水槽：プラントストリートとレイアウトのルール
- Nature Aquarium（ネイチャーアクアリウム）スタイル：レイアウトの基本ルールと立ち上げ手順
- wabi-kusa（侘び草）：水上葉プラントボールの作り方と育て方
最終更新日： · インタラクティブ3Dガイドを開く · すべての水草・生体ガイド一覧