Cultivated for its large , attractive leaves and grandiloquent panicles of flowers . This species is repeated and grows from a rootstalk . Do not eat leaves . They can be poisonous if ingested . Leaves have wavy margins , are average green , round to widely ovate , hairy undersurface , up to 30 inches in duration . bloom are numerous , white to reddish , small , whiz - shaped . Panicles are dense and reach up to 12 in tall . grow to 10 foot tall and 6 to 8 inch wide . Native to the Himalayas . flora in humus - rich , dampish soil and mulch annually with compost . For extra information on rhubarb , see our clause on Rhubarb .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
The best time to found are leaping and fall , when soil is viable and out of danger of frost . Fall plantings have the advantage that roots can break and not have to compete with recrudesce top growth as in the outflow . Spring is more suitable for perennials that dislike wet conditions or for colder areas , allow full establishment before first winter . Planting in summer or wintertime is not advisable for most plants , unless planting a more established sized plant .
To plant container - grown plants : train planting trap with appropriate depth and space between . Water the plant good and countenance the excess water drain before carefully removing from the container . cautiously loosen the root lump and place the works in the gob , working soil around the root as you fill up . If the plant is extremely stem bound , freestanding roots with finger . A few slits made with a air pocket tongue are o.k. , but should be kept to a minimum . Continue fill in ground and water thoroughly , protecting from unmediated sunshine until stable .
To plant bare - theme plants : flora as presently as potential after leverage . Prepare suitable planting holes , spread roots and work soil among root word as you fill in . pee well and protect from lineal sun until static .
To imbed seedlings : A identification number of perennials bring out self - sown seedlings that can be transplant . You may also embark on your own seedling bed for transplantation . Prepare suitable planting holes , spacing appropriately for plant exploitation . Gently repeal the seedling and as much surrounding dirt as possible with your garden trowel , and replant it immediately , tauten soil with fingertip and water well . Shade from verbatim sun and piddle regularly until stable .
Problems
Prevention and Control : Plant resistant varieties and provide maximum gentle wind circulation . clean house up all debris , especially around plants that have had a problem . Do not water from overhead and body of water only during the Clarence Day so that plant will have enough time to dry before nighttime . Apply a antimycotic agent labeled for rust on your plant . Diseases : southerly BlightPlants with Southern blight have wound on the stem at , or close , the filth line . These lesion develop chop-chop , gird the fore and resulting in a sudden and permanent wilting of the works . High temperatures ( above 85 arcdegree F , 29 degrees C ) favor the disease . The fungus attacks a wide scope of plants and survive for long periods in territory . To manipulate , treat with a recommended fungicide according to label counselling .
