This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
A coarse - growing but very ornamental plant, 6-10 ft. high, with thick, green and purplish stems, large-lobed spreading leaves, and masses of small white flowers borne in umbels 18 in. or more across. This is the common "Cow Parsnip", the seeds and plants of which were largely sold a few years ago under the name of the "Cartwheel Flower". It grows in any coarse soil and in almost any place, and is easily raised from seeds every year to flower the following season.