July 2, 2010, Newsletter Issue #142: Amazon Swords

Tip of the Week

Echinodorus (Amazon swords)
Most are good as single highlight plant, or background groups in large aquariums. Like high levels of fertilizer. Can grow emersed. Reproduce by adventitious plants on end of stalks runners, or root division, depending on species.
Common species:
1. bleheri, paniculatus, amazonicus: Your generic amazon swords, usually available in small, medium or large. Light green leaves can be over 20" (50cm). Produces plantlets directly on the flower stalk.
2. cordifolius (radican sword): heart-shaped leaves. Likes being emersed; will flower in open-top aquarium. Sends floating leaves if illumination is low.
3. major/maior (ruffle sword)
4. osiris (melon sword): blood-red slightly-undulate leaves.
5. parviflorus (tropico sword): smaller variety.
6. tenellus, quadricostatus (pygmy chain sword): leaves up to 6", 72-86F. Fast reproduction by runners; can create a lawn on large enough tank. Small plants; nice foreground display.

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