Harvesting Rhubarb: When, How, and How Often
Whether you’re craving a tangy pie or a spring breakfast compote, harvesting rhubarb correctly is the secret to getting the juiciest, most tender stalks—and keeping your plant productive for years. If you’re new to rhubarb or want to step up your harvest game, use this guide to time, technique, and frequency for picking perfect stems.
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When is Rhubarb Ready to Harvest?
- First-year plants: Do NOT harvest—let all growth go to the roots!
- Second year: Pick only a few stalks at a time, just once or twice, to let crowns establish.
- From the third year on: Full harvests start as soon as stalks are thick, juicy, and 30cm (12in) long (usually late April or May—depending on variety and climate).
Rhubarb Season
- Outdoor maincrop: May through July; can last to August or September in cool climates.
- Forced rhubarb: February to early March (under cover).
How to Harvest Rhubarb
- Identify ripe stalks: They should be thick, upright, and richly colored.
- Grasp stalk low at the base.
- Pull and twist sharply sideways—don’t cut! This prevents rot and encourages new shoots.
- Remove leaf immediately: Leaves are toxic; trim off and compost right after harvest.
How Often Should You Pick Rhubarb?
- Main harvest: Every 1–2 weeks from established plants, until about midsummer.
- Take no more than half to two-thirds of stalks at once—always leave several strong, young stalks to recharge the crown.
End-of-Season Rules
- Stop regular harvesting by late July (UK) or after 10–12 weeks—let the plant recover for next year.
- Continue to remove flower spikes and yellow leaves as needed.
For Forced Rhubarb (Indoors or Under Forcing Pots)
- Pull 3–4 thick stalks at a time once they reach 30–40cm (12–16in).
- Stop once main outdoor stalks emerge (don’t stress crowns by over-forcing).
Bonus Tips
- Harvest in the morning: Stalks are at their crispest.
- Stalk thickness is more important than color—some varieties stay green and are still delicious.
- Always compost or discard leaves safely; never eat.
Wrapping Up
Gentle, regular picking leads to a healthier plant and more delicious rhubarb for you. Use the twist-and-pull method, leave enough stalks behind, and time your main harvest right—and you’ll feast on garden-fresh rhubarb for years to come.