The root is old and tough and will foster less than premium stalks. Splitting rhubarb will give new life to the plant. Rhubarb is usually harvested in the cool, early months of spring, however, rhubarb plant division can extend the harvest period into the summer months.

Why are my rhubarb stalks so thick?

Overcrowding. Rhubarb is a long living perennial which can grow for decades. Each spring brings an abundance of new shoots emerging from the crown. Eventually, this causes overcrowding and thinning rhubarb stalks.

Can you use thick rhubarb stalks?

If they are harvested too late, they become tough. Stalks should be free of insect damage and disease. If the leaves are spotted, or have hole in them, or the edges are “eaten” by insects or slugs, that will not affect the stalks, and, since the leaves are discarded, you can use these stalks without any concerns.

How do you make rhubarb grow better?

Rhubarb grows best in full sun, but will tolerate partial shade. Choose a site with soil that is well-draining and fertile. Good drainage is essential, as rhubarb will rot if kept too wet. Mix compost, rotted manure, or anything high in organic matter into the soil.

Are large rhubarb stalks good?

Damaged stalks become soft and mushy. Damaged rhubarb stalks should be pulled and discarded. Any new growth which emerges later this spring would be safe to eat. Rhubarb plants showing no sign of damage are fine and can be harvested.

How do I make my rhubarb stalks thicker?

Rhubarb is a heavy feeder and needs to be planted in soil high in organic matter if you want to have large, thick rhubarb stalks. It helps the plant to cultivate around it, and to keep it mulched, weed-free, and well watered. The plant also likes a neutral pH soil.

Why is my rhubarb so thin?

The most common reason for rhubarb having thin, spindly stalks is that the plant itself has gotten too large and mature. It seems counter-intuitive, but for rhubarb, a massive plant is the same problem as overcrowding with other plants (which is another cause of thin stalks).

Does rhubarb need a lot of water?

Although good drainage is essential, rhubarb requires a lot of water. New plantings must be kept moist if rain is scarce; and even established plants need to be watered at least an inch a week anytime it doesn’t rain during the growing season.

How do you rejuvenate rhubarb?

Rake the straw mulch away from the plant and put down 2 or 3 inches of composted manure around the plant in a ring. Do not cover the crown where the leaves will emerge. Then add the straw to the top. As the manure breaks down during the season, add straw for that magic three inches.

What should not be planted near rhubarb?

For example, rhubarb, sunflowers, and thistles are all susceptible to curculios, a weevil that bores into cylindrical stalks to lay its eggs, and should not be planted near one another.

Article first time published on

Why is my rhubarb so thin and spindly?

Spindly stalks are a sign of too little food, and often also indicate too little moisture (particularly if your rhubarb is competing with other deep-rooted plants such as a tree). The quickest solution is to mulch in autumn with a thick layer of well-rotted compost or good quality multi-purpose compost.

Why are my rhubarb stems thin?

Thin, spindly or scrawny rhubarb stalks are not fun 😉 Seems like you are doing the right thing, that is adding manure to improve the soil. You may want to try adding an all-purpose fertilizer of 10-10-10 instead though, just to ensure all the various nutrients are included in the feeding of the rhubarb plants.

Are hollow rhubarb stalks safe to eat?

No, they won’t actually harm the plant. Nor will they affect the flavor of the rhubarb. But they will greatly limit your harvest. The simple reason is that it takes a plant a lot of energy to produce flowers and seeds and that is energy is being diverted from producing the actual edible stalks.

How big is too big for rhubarb?

The best time when to harvest rhubarb is when the stalks of the leaves reach at least 10 inches (25 cm.) long. This will ensure that the plant has established itself well enough for the year to be able to tolerate being harvested.

What's the best feed for rhubarb?

For the highest yields of rhubarb stems, fertilize your plants three times per year. Apply 2 to 3 inches of composted manure, compost or ½ cup of an all-purpose garden fertilizer, such as 10-10-10, around each plant in early spring (now). Once growth starts to occur, apply fertilizer again.

Can rhubarb get too tough?

Rhubarb is usually harvested in autumn and spring when stalks should be firm – too late and they become tough and stringy. 12. Do not cut stalks but snap off at ground level with a twisting motion.

How often should you water rhubarb?

Water rhubarb plants during dry weather to maintain healthy foilage throughout the summer. Healthy plants are able to store large amounts of food in their roots, resulting in a good harvest the following year. During dry weather, a deep soaking every 7 to 10 days should be adequate.

Can you use Miracle Grow on rhubarb?

Cultivate in shallowly and water. Or use Miracle Gro water soluble fertilizer. Apply one gallon of solution to each plant. Rhubarb is best fertilized in May and June.

How do you thin out rhubarb?

Splitting your rhubarb plants isn’t rocket science. Simply dig around the root clump, 6 inches deep (15 cm.) and lift the whole plant from the ground. Divide the root ball into sections containing at least one bud and up to two to three buds with plenty of roots by cutting down through the crown between the buds.

Can you overwater rhubarb?

Rhubarb should not be overwatered because it is susceptible to crown rot. If you water your rhubarb, do so early in the day to allow the surface of the soil around the plants to dry out during the rest of the day.

Does rhubarb need sun or shade?

Rhubarb thrives in full sun but will yield to light shade. Select a location that gives plants ample room; individual rhubarb plants can measure up to four feet wide and tall. Plant crowns in spring as soon as soil is workable.

Why are my rhubarb leaves turning yellow?

It is also possible that the soil in which the rhubarb plants are planted is not rich enough in iron. Plants with iron deficiency will turn yellow and wilt…often noticed by yellowing between the veins in the leaves. … Alkaline soil conditions, poor soil aeration or overwatering can cause iron deficiency symptoms.

Can you put rhubarb leaves in the compost bin?

While we don’t advise eating rhubarb leaves, it turns out that you can compost them; we explain why here. Rhubarb leaves contain oxalic acid, which is corrosive and a kidney toxin, but this has no significant effect on soil micro-organisms. … Eating plants grown in rhubarb-leaf compost is also perfectly safe.

Should rhubarb be cut back in the fall?

Prune back the rhubarb stalks to the ground in late fall or early winter after they begin to die back naturally from frost. Rhubarb may not die back completely if temperatures remain above 40 degrees Fahrenheit, but dead and damaged leaves can still be removed throughout winter, cutting them with shears or a knife.

How many rhubarb plants do I need?

At maturity, a rhubarb plant gets to be about 3 feet in diameter, so plant them 3 to 4 feet apart in a 3- or 4-foot-wide bed. Four to six plants will provide plenty of stalks for most families. Harvest sparingly, starting in the second year.

Should I remove yellow leaves from rhubarb?

Yellowing and wilting leaves could simply be a lack of water at crucial times. Then again, the soft stalks may also point to a fungal disease. Check the base of the crown for white fungal growth or rot spots. Affected plants should be completely removed, disposed of in the garbage, and replaced with new plants.

When should you not eat rhubarb?

Rhubarb stalks are best if harvested in spring and early summer, but they do not become toxic or poisonous in late summer. They can be eaten all summer long. There are two good reasons not to eat them in summer. They tend to get woody in late summer and don’t taste as good.

Is it OK for rhubarb to flower?

Should I Let My Rhubarb Flower? There is no harm in letting your rhubarb flower, but keep in mind that energy the rhubarb plant puts towards making a flower and growing seeds is energy that will not being directed towards growing leaves. … Rhubarb flowers can simply be cut from the plant as soon as you see them appear.

Is it better to cut or pull rhubarb?

Harvest rhubarb by cutting or gently pulling the stalk away from the plant. Do not harvest any stalks during the first growing season, so your plants can become established. … At this point, their harvest period should run 8 to 10 weeks or until the stalks become thin, which may be a sign that food reserves are low.

Does rhubarb spread on its own?

Rhubarb is hardy, and will survive late spring frosts. … Space Rhubarb roots two to three feet apart. They will spread. Rhubarb tolerates a little crowding, but the stalks and leaves will grow bigger and healthier if you allow them plenty of space.

When can you move rhubarb?

Although transplanting rhubarb can be performed in the spring or fall, I recommend early spring as the best time to transplant rhubarb. Some gardeners prefer the autumn for transplanting because the plants are dormant.