Rhubarb sends up new leaves in spring and dies back in autumn. The reddish green leafstalks are the edible part; never eat the leaves, which are poisonous. Plant divisions in late winter or early spring, setting them 3 to 4 feet apart. Let plants grow for two full seasons before harvesting.
- Zones 1-11, 14-24, 26-45; best in Zones 1-11, 34-45
- Coastal sun; some shade inland
- Water freely during active growth