I have a couple of rhubarb plants and would like to share with my children. How do we - or can we - start plants from the seeds?
Growing rhubarb from seed is not recommended as rhubarb seedlings do not retain the characteristics of the parent plant. Also growing from seed can take up to two years for the first harvest.
However, you can obtain seed through the internet (www.seedsforsurvival.com is one source). The following may help if growing from seed:
Soak seeds for a few hours before planting
Plant seeds in a suitable planting mixture, two seeds per pot (to allow for 50% germination).
If both seeds pop up, pinch out the weakest one.
Plant seedlings outside when they are about 30 days old and in warm weather. Protect seedlings for at least another month from any cold weather.
Do not harvest the stalks for at least two years.
The most recommended method by far is to divide the rhubarb plant by splitting the crown with a sharp spade. Do this when the plant is dormant. Plant the cuttings three feet apart with the buds just below soil level.
Please note that any flower heads growing from your rhubarb plant should be cut out immediately, unless you still want to grow from seed. Some might say flowering is an indication of lack of water or manure.
and The Complete manual of Organic Gardening by Basil Caplan