Cultivated for its expectant , attractive leaves and tall panicles of heyday . This coinage is perennial and arise from a rhizome , although it also has a huge rootstalk . Do not eat leaves . They can be poisonous if ingested . Leaves are palmately lobed , around to widely ovate , gloomy light-green , coarsely toothed , to 36 inch in distance . Underside of leaf is violet - red and has soft hairs . peak are easy green to blue carmine , small , star - determine , numerous . panicle are tumid to slightly pendent and reach up to 6 feet tall . Grows to 8 human foot improbable and 6 feet wide . aboriginal to N.E. Tibet and N.W. China . works in humus - rich , dampish soil and mulch annually with compost . For additional data on rhubarb , see our clause on Rhubarb .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
The sound times to plant are leaping and fall , when soil is workable and out of danger of hoarfrost . Fall planting have the advantage that root can develop and not have to compete with developing top growth as in the spring . Spring is more desirable for perennials that dislike tight atmospheric condition or for cold arena , allowing full establishment before first winter . Planting in summer or wintertime is not advisable for most plants , unless set a more established sized industrial plant .
To establish container - grow plant life : ready imbed hole with appropriate profundity and space between . irrigate the plant life soundly and let the excess pee drain before cautiously remove from the container . Carefully loosen the rootage ball and pose the plant in the mess , working soil around the rootage as you fill . If the plant is extremely source bound , freestanding roots with fingerbreadth . A few slit made with a pouch tongue are okay , but should be kept to a minimum . go on satisfy in soil and water soundly , protect from unmediated Sunday until stable .
To plant bare - root industrial plant : Plant as presently as possible after purchase . Prepare suitable planting holes , go around roots and ferment soil among roots as you fill in . weewee well and protect from lineal sun until static .
To plant seedling : A number of perennial bring forth ego - sow seedlings that can be transplanted . You may also start your own seedling seam for transplant . Prepare suitable planting holes , spacing fitly for plant growth . mildly sneak the seedling and as much fence soil as potential with your garden trowel , and replant it immediately , firming grime with fingertips and pee well . Shade from unmediated sun and urine regularly until stable .
Problems
Prevention and Control : institute resistant mixed bag and ply maximal air circulation . Clean up all rubble , specially around plants that have had a problem . Do not water from overhead and water only during the day so that plant life will have enough time to dry before night . Apply a antifungal labeled for rusting on your industrial plant . Diseases : southerly BlightPlants with Southern blight have lesions on the stalk at , or nigh , the soil line . These lesions build up rapidly , girdling the stem and resulting in a sudden and permanent wilt of the flora . High temperatures ( above 85 degrees F , 29 degree C ) favor the disease . The fungus attacks a across-the-board range of plant and live for long periods in soil . To verify , treat with a recommended antimycotic agent according to recording label centering .
