Growing Rhubarb

Rheum rhabarbarum : Polygonaceae / the dock family

Jan F M A M J J A S O N Dec
                    P P

(Best months for growing Rhubarb in New Zealand - cool/mountain regions)

  • P = Plant crowns
  • Easy to grow. Plant pieces of rhizome or roots 8 - 10 cm (3 - 4 in.) deep. Best planted at soil temperatures between 41°F and 68°F. (Show °C/cm)
  • Space plants: 35 inches apart
  • Harvest in approximately 1 years. You will have a stronger plant if you leave it for about a year before using..
  • Compatible with (can grow beside): Brassicas (Cabbage, Broccoli, Cauliflower, etc)

Your comments and tips

20 Dec 16, Nola (Australia - temperate climate)
There are both red and green stemmed rhubarb plants. The green stems will always be green and taste just as good. My red rhubarb stems are red from the beginning so harvesting is just a matter of pulling the stem off when I want to use it. Sometimes the stems are thin, but during mid to late spring are usually thicker. The plants are gross feeders so keep the compost up to them and water well in summer. I chop the leaves from the stems and leave them around the base of the plant.
12 Dec 16, Margaret (Australia - temperate climate)
We have a very old healthy rhubarb plant in a pot. Very prolific but for the last year it has only thin stalks. The stalks used to be much thicker. Can I do anything to make the stalks thicker? Still delicious thoug.
13 Dec 16, John (Australia - temperate climate)
Rhubarb likes plenty of manure/compost as well as water. Dig out some of the soil with a trowel and add blood & bone, pelletised manure, etc. this should help to give it a push along. Plants growing in pots are entirely dependant on what we provide for them so adding some extra nutrients will help. Make this one of your winter jobs when the plants are more or less dormant and you can divide the plants, if needed, at the same time. Rhubarb is a very productive plant and if you sweeten it to taste with stevia (a natural non calorie sweetener) after it is cooked you get all the flavour minus the calories. Trust this helps.
09 Dec 16, Kay (Australia - temperate climate)
Our rhubarb plants are now quite large but the stems are still green. Are they to picked when red?
10 Dec 16, John (Australia - temperate climate)
Most, if not all, rhubarb plants available in nurseries, etc. are grown from seed. Seedlings can be very variable fro all green through partially red to all red. If the plant is growing well the stems should taste the same, but will be less appealing. Try adding Cochineal (a natural red food colouring) when it is cooking. Use small amounts until you get an appealing colour. If you use Stevia, which is a natural sweetening substance, in lieu of sugar you will get all of the flavour minus the calories. Stevia is readily available in the sugar/sweetener section of most supermarkets. To ensure red rhubarb you would need to get a root division off someone who has red stemmed plants. Trust this helps.
04 Dec 16, Nico Schutte (South Africa - Semi-arid climate)
Will rhubarb grow indoors? No direct sun.
26 Nov 16, Carol (Australia - sub-tropical climate)
Hello, I actually live in Sunraysia, I have just bought 2 potted Rhubarb plants and am about to plant them in a planter box. Because we have high temperatures here in the 40's in summer, where would the best area to grow them. ? Your help would be appreciated . Thank you
27 Nov 16, Mary (Australia - temperate climate)
Hi Carol, I live in a temperate area but we also experience some really hot days too. My rhubarb was happier on those days if I put a shade cloth on a frame over them on those scorcher days. I use tomato stakes of varying lengths to produce a makeshift frame and use plastic cable ties to attach the shade cloth. Cable ties are a gardeners best friend!
27 Nov 16, John (Australia - temperate climate)
Check out the other comments on rhubarb for more tips.
27 Nov 16, John (Australia - temperate climate)
Hello Carol. A site facing East or one that can be shaded a bit would be best. The morning sun is not usually as intense as later in the day. Roots being 'cooked' by the sun is always a chaallenge for plants growing in containers so it is important to try and keep the roots cool. If the pots are plastic you could wrap them in hessian and keep that damp on a hot. Keep your plants well watered as this will also help. Heat stressed plants may wilt, with watering they will be able to recover normally but you don't want 'stringy' stalks. This all sounds a bit negative but consider it a 'challenge' and you will be successful. Trust this helps.
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