Persicaria Kawagoeanum

🌿 Persicaria sp. 'Kawagoeanum' – Orange-Red Willow-Leaved Knotweed for Vibrant Midgrounds

Persicaria sp. 'Kawagoeanum' is a fast-growing aquatic stem plant native to Asia, admired for its narrow, willow-like leaves and rich coloration when submerged. At Aquarium Plants Factory nursery, we cultivate this plant emersed, where its leaves remain bright green and its stems grow sturdy and upright. Once introduced into a planted aquarium, the leaves undergo a dramatic transformation—shifting to glowing tones of orange-red to pink under strong light and CO₂ supplementation.

This species is sometimes mislabeled in the hobby as Persicaria sp. 'Red', Polygonum sp. 'Kawagoneum', or incorrectly as Persicaria sp. 'Sao Paulo', but its vivid coloration and graceful form make it a standout in any layout. Underwater, its 8–12 cm long, 0.6–1 cm wide leaves provide elegant motion and contrast in the midground of aquascapes. In emersed setups like paludariums or wabi-kusa, the plant develops a more shrub-like growth and can even flower when left untrimmed.

Persicaria sp. 'Kawagoeanum' thrives with nutrient-rich substrates, regular dosing of macro- and micronutrients, and steady CO₂. As the plant matures, older stems may become leggy or drop lower leaves—regular trimming and replanting of top cuttings are key for a clean, vibrant display.

🌟 Key Features:

• Scientific Name: Persicaria sp. 'Kawagoeanum'

• Also Known As: Persicaria sp. 'Red', Polygonum sp. 'Kawagoneum', Persicaria sp. 'Sao Paulo' (incorrect)

• Leaf Form: Long, willow-like blades

• Coloration: Green in emersed form; transitions to orange-red or pink when submerged under strong light

• Growth Form: Upright stems with moderate branching

• Size Range: Up to 30–40 cm tall in aquariums

• Cultivation Method: Grown emersed at Aquarium Plants Factory

• Ideal Placement: Midground color accent

🌱 Growth & Propagation:

• Lighting Needs: Medium to high (higher light triggers more intense color)

• CO₂: Strongly recommended for optimal growth and red pigmentation

• Nutrients: Requires both substrate and water column fertilization

• Growth Rate: Moderate to fast

• Trimming Tips: Top cuttings re-root easily; remove older, bare stems

• Emersed Growth: Easily adapts to moist, nutrient-rich soil and can flower in open-top tanks

🪴 What You’ll Receive:

• Fresh-Cut Plants: Approx. 6 fresh-cut stems, loose and without roots

• Bunched Plants: Approx. 6 fresh-cut stems bundled with foam and plant weight

• Potted Plants: Approx. 6 fresh-cut stems, potted in net pot with Rockwool

🖼️ Aquascaping Benefits:

• Adds warm, natural contrast with its orange-red submerged coloration

• Offers soft, flowing texture that enhances depth in midground layouts

• Ideal for nature-style, Dutch-style, or wild-themed aquascapes

• Great for transition zones between low-growing plants and taller backgrounds

• Suitable for both submerged tanks and emersed displays like wabi-kusa or paludariums

⚠️ Disclaimer:
This plant ships in its emersed form with green leaves. Color transformation will occur once adapted to submerged conditions with adequate CO₂ and strong lighting. Trimming and replanting top portions helps maintain a fresh, healthy appearance.

🚫 State Restrictions Notice ♻️ Be a Responsible Aquatic Plants Owner
Never release Persicaria sp. 'Kawagoeanum'—or any aquarium plant—into local waterways. Improper disposal can disrupt native habitats. Dispose of trimmings and plant waste responsibly.