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Gunneras, aka Dinosaur Food are amazing perennials with giant leaves up to 4-8 feet across. They need constantly moist, boggy soil, high humidity and mild summer weather. Gunneras are the ultimate conversation piece for experienced plant collectors.
These magnificent, big, bold perennials grow up to 8 feet tall with enormous leaves that can grow 4-8 feet across. Grown well these can become the ultimate conservation piece and children and adults love to be photographed in front of it. Where winters are mild, the leaves will last more than 1 year but in colder climates the leaves die-back to the roots in winter. Needs high humidity and moist soil and thrives next to streams or pools. Best in mild summer areas, it is rarely successful in hot or dry climates. Winter hardy to zone 7. Grows beautifully with Joe-Pye Weed.
Photograph by Stan Shebs, at the San Francisco Botanical Garden.
Grows to about 6 feet tall with huge frilled leaves that reach 4-6 feet across. Needs high humidity and moist soil and thrives next to streams or pools. Best in cool summer areas, it is rarely successful in hot or dry climates. Winter hardy to zone 7.
Sow seeds in 2 inch pots or cell packs, press into soil, lightly cover. Kept at 75-80° F., germination is irregular over 30 to 90 days. Using bottom-heat and a humidity dome is highly recommended.