1659 (indicated as 1660), Robert Sharrock, “Of Propagation by Seed”, in The History of the Propagation & Improvement of Vegetables by the Concurrence of Art and Nature: [...], Oxford: Printed by A. Lichfield, printer to the University, for Tho[mas] Robinson, OCLC832949671, pages 14–15:
Many times they ſow divers ſeeds in a Bed together, as Radiſhes and Carrots, that by ſuch time as the Carrots come up, the Radiſhes may be gone. Upon beds newly ſet with Licorice they ſow Onions or Radiſh, or Lettice if their Licorice plants or ground be but weak, ſo as not quickly to cauſe a ſhadow with their leaves.
1866 June 1, J. R. Jackson, “The New Vegetable (Raphanus caudatus.)”, in Nature and Art, volume I, number I, London: Day & Son, Limited. 6 Gate Street, Lincoln's Inn Fields, (W.C.), OCLC145376967, page 8:
The newly-introduced radish, which has attracted the attention of horticulturists so much of late, is certainly a novelty, inasmuch as the edible portion of the plant is the seed-vessel, and not the root. The common radish, in its numerous varieties, in such an exceedingly popular salad-plant, that we are scarcely prepared to look to this genus for new economic products or floral novelties. When we consider the many varieties of radish known to this country, from the long and tapering red-root to the white turnip-radish, we might, in some measure, be prepared for a wider development of nature's laws in tropical countries.
1863, Margaret Plues, “Cruciferæ”, in Rambles in Search of Wild Flowers, and How to Distinguish Them, London: Journal of Horticulture and Cottage Gardener Office, 162, Fleet Street, E.C., OCLC19134887, page 39:
The Wild Radish (Raphanus raphanistrum), is Edward's trophy, brought from a piece of waste ground near Hawkhurst, in Kent. The petals are white or pale lilac, veined distinctly with a deeper shade. The Sea Radish (R. maritimus,[…]), is primrose-coloured, also veined. Fanny brought it from the beautiful cliffs near Lizard Point.
2015 August, Peter Burke, “Seeds”, in Year-round Indoor Salad Gardening: How to Grow Nutrient-dense Soil-sprouted Greens in Less Than 10 Days, White River Junction, Vt.: Chelsea Green Publishing, →ISBN, page 56:
Radishes were something new for me. The first time I tried growing for seed, I was surprised by the shape of the pods; they looked like hot peppers. Being the curious type I nibbled on a few pods and found they were delicious when still in the immature stage. I thought I had discovered something novel when, lo and behold, I found out that radishes grown in India just for their pods—a variety called Rat-Tail radish—for many years.