Answer: Alternanthera 'Brazilian Red Hot' can be divided and after replanting and allowing the roots to become established you can prune the plants back to encourage healthy new growth. The heat of summer is not the best time to dig and divide but if you do it now simply dig the entire plant and then divide it by cutting through the rootmass with a shovel. Each division should have roots with leaves attached. Replant and provide some temporary shade until the plants re-establish to avoid wilting and dead of the foliage. After they have established you can prune them back a bit. Enjoy your garden!
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