Shallow planting and a generous moisture supply may help to reduce the incidence of this disease. Affected plants should be completely removed as soon as possible after they show signs of this disorder. It is also good practice not to place new plants in soil where diseased plants have grown. Harvesting Do not harvest during the year of planting and during the next year. As with asparagus, the root and crown must be allowed to grow in order to store energy reserves.
Full harvest can begin the third year after planting.
No more than two-thirds of the larger stalks should be removed at any one time. Alternatively, you may cut the stalks at ground level. Harvesting usually begins in late May and continues until July. Under most conditions, harvesting should cease at the end of July to allow the food reserves to build up again in the roots and crown. Winter Preparation Watering rhubarb should continue until late fall.