Harvest and Storage. Rumex Alpinus It is also called the monk rhubarb but is not the same as the garden rhubarb. ), hardy in U.S. Department of Agriculture plant hardiness zones 3 through 8, is a perennial garden plant that has tart-tasting stems used in pies, jellies, and preserves. Dividing the crowns of mature plants every few years resets the maturity clock so to speak and reduces flowering. While the flower or seed stalks should not be used, the leaf stalks are edible. Rhubarb (Rheum spp. Sour. Since it may be high in oxalate, you should avoid eating too much of it and try to select stalks from low-oxalate varieties. Rhubarb is the name given to several species of herbaceous perennial plants in the genus Rheum, including R. rharbarum and R. rhaponticum (wild rhubarb), R. rhaponticum (garden rhubarb) and cultivated hybrid varieties designated as R. hybridum or Rheum × hybrium which are grown for their edible leaf stalks, or petioles. Burdock (photo VA Tech) burdock leaves aren't as smooth and are lighter in color. Beats me? However, the flower stalks should be promptly pulled and discarded. They bore into the rhubarb stalks. Delicious. Inevitably, when I eat these, I end up with the gritty "rhubarb teeth" effect. The root-stock is very stout, yellow color; the stem 2 to 4 feet (60-120 cm) high, bearing pale green leaves, broad and very long, the edges waved, but not cut into. Also known as the spinach rhubarb, this plant is often mistaken for the real deal. The best way to help avoid the Potato Stem Borer from damaging your rhubarb is to control the couch grass and other weeds in and around your rhubarb garden. The adult moth lays their eggs on the stems of grasses in August, which in turn hatch the following spring. The whole plant – a herbaceous perennial growing from short, thick rhizomes – is also called rhubarb. I have a lovely rhubarb plant in the backyard. Rhubarb needs to get eight or more hours of full, uninterrupted sun per day. The rhubarb stalks may become somewhat woody by mid-summer, but they don't become poisonous. Rhubarb is a robust, clump forming plant. You would swear that it is the garden rhubarb due to the thick and bright red leaf stems similar to the edible rhubarb. On occasion, I like to slice off some stalks and bake myself up a nice rhubarb crisp, or a rhubarb cobbler, or some rhubarb turnovers. Trim off any leaves that have mildew or fungus, and treat the plant with a natural fungicide. {{gwi:217776}} Rhubarb leaves are poisonous but the stalks are good for pies and sauces. Rumex alpinus - Monk's Rhubarb, Garden Patience - Monk's Rhubarb is a Dock bearing the name of Rhubarb for some purging quality. Don't go planting it in heavy clay in a wet area! Patches of reddish-brown rust will also be a leaf fungus. Rhubarb is a vegetable derived from cultivated plants in the genus Rheum in the family Polygonaceae. Only harvest and use the rhubarb stalks. The root appears stout and yellow. Rhubarb like very fertile, well-drained soil--like a spot of sandy loam on a slope. The plant cannot tolerate wet roots. Rhubarb photo. Is it safe to harvest rhubarb if the plant is flowering? Downy fungus in particular can be a problem, and it looks like fuzzy white patches underneath the leaves. The soil needs to able to hold moisture and be well-draining. Another factor that influences the growth of flower stalks is the variety of rhubarb. Our rhubarb plants have been tended by one home owner after the other for the past 100 years! (Thank you Cornell, I borrowed your pix.) As a kid, we just ate them fresh in the garden. Rhubarb is a unique vegetable that people use in cooking and baking. And we get several flower stalks per rhubarb plant. Rhubarb leaves have a smooth texture. It grows like a weed, as rhubarb is wont to do. Historically, different plants have been called "rhubarb" in English. 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