Rhubarb illustration

Rhubarb Growing Guide

Polygonaceae family

Days to Harvest90 days
SunlightFull Sun
Frost ToleranceHeavy
Spacing1/sqft (12" apart)
Germination7-21 days
HardinessVery Hardy
Germ. Temp65°F
Start Indoors10 weeks before last frost

Growth Stages

  1. Seedling
  2. Early Vegetative
  3. Late Vegetative / Harvest Ready

Planting Dates by Zone

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

Frequently Asked Questions

How long does it take to grow Rhubarb?

Rhubarb takes approximately 90 days from planting to harvest.

How much sun does Rhubarb need?

Rhubarb requires full sun (6+ hours direct sunlight per day).

How far apart should I plant Rhubarb?

Plant Rhubarb at 1/sqft (12" apart) using square foot gardening spacing.

Can Rhubarb survive frost?

Rhubarb is tolerant of heavy frost and can withstand freezing temperatures.

How long does Rhubarb take to germinate?

Rhubarb seeds germinate in 7-21 days at an optimal temperature of 65°F.

When should I start Rhubarb seeds indoors?

Start Rhubarb seeds indoors 10 weeks before your last frost date, then transplant -4 weeks after last frost.

Plan Your Rhubarb Garden

Track Rhubarb from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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