Rhubarb is one of the easiest vegetables to grow. And since it is a perennial in zones 3-7 (or an annual elsewhere), it will keep producing wonderful, sweet and tart stalks that will have you in pies, tarts and jams for years!


One of biggest keys to success in organic gardening is the condition of the soil.  There needs to be adequate organic matter to hold moisture and nutrients.  And at the same time, the soil needs to be loose enough for good aeration and drainage, which will help promote strong root development.

Rhubarb is easy to grow if your soil has the proper nutrients. People always assume their soil is average, but unless you have a soil test it is just a guess.  More often than not, it is necessary to amend the soil to achieve optimum pH balances, as well as the proper levels of nitrogen, phosphorus and potash. Testing your soil is ideal; however, at a bare minimum, before planting anything, work in at least 2-4” of organic mulch and at least one-half inch of finished compost into your topsoil.  And if you suspect your soil is less than ideal, mix in a cup of MegaVeggie if you feel your soil is in great condition, two cups if in good condition and 3 cups if in poor condition, into every 100 sq. ft. of soil.  This 100% organic soil amendment will make up for a lot of deficiencies.  And investing in good soil and fertilizer will pay off good dividends for asparagus – in the form of a wonderful spring harvest for years to come!

Also, mulching with compost or straw will help keep the soil moist and also help to feed the plant and prevent weeds.  Don't mulch over 3-4" because this might prevent oxygen from entering the soil and could cause root rot.


If planting from seed: Plant seeds in early spring, as soon as the soil is workable. Plant seeds in full sun 1/4-1/2” deep in rich soil, then water with seaweed solution. This will help germinate the seed and promote root growth.  Space 2’ apart in rows, with 3’ between rows. If planting in raised beds, plant 2’ on center.

If planting seedlings: If you choose to plant seedlings, start indoors three weeks before the last anticipated hard frost. Harden them off first if you are buying or growing starts.  This is done by placing the seedlings in direct sun for an hour, then placing in the shade.   Each following day increase the time in the sun by one hour; repeat this each day until they are in the sun for 6 to 8 hours, which will take a week or so. Make sure they don’t dry out.

If you know there is a chance of hard freeze, bring seedlings inside until freeze is over. When it is safe, leave seedlings outside, placing them next to a building with an overhang and let them get used to nighttime temperatures.  The building and overhead cover should give you some protection.  After one night outside and they are used to sun, you can plant without shocking the plant.  Plant in soil when outside temperatures may go to 32 degrees but mostly stay above freezing.

When planting, use a tablespoon of bone meal in the bottom each planting hole. If you’re Vegan or don’t like to use bone meal, then MegaStart will work. It’s 100% Organic and animal-free. It is best to root feed with seaweed right after planting to prevent shock.  Seaweed is better for shock prevention than any other product on the market.

Note: If you are in zones 3-7, after your season is over, mulch 4-6” and this perennial will come up again next spring! If you are in higher zones, rhubarb can be grown as an annual.


After planting, continue to feed seaweed once a week by spraying leaves, and fish emulsion every two weeks through root feeding until harvest. I use a hose sprayer for fish, but just make sure you spray enough so that the roots of the plants are soaked.  If fish gets on the leaves, don’t worry, it won’t burn the leaves.

If your plants are not vigorous, they are not getting enough food and your soil is in poor condition.  If so, side dress with 2 tablespoons of MegaVeggie around the base of the plants and water in.  Continue the seaweed once a week along with fish emulsion every two weeks.  Do not let the soil dry out; soil should be moist but not soggy.

Recommended Schedule for Fertilizing and Amending Soil:

1.  Bone Meal or MegaStart -- at planting
2.  Seaweed -- at planting and once a week until harvest
3.  Fish Emulsion -- every two weeks after planting until harvest
4.  MegaVeggie -- if plant does not appear vigorous, every two weeks until harvest 


Do not harvest stalks the first year because it will set the plants back. Instead, start harvesting in year two. If you want to kill your husband, feed him the leaves in a salad (haha, just kidding!). The leaves are poisonous, however, so don’t eat them!

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