Ciclospermum leptophyllum is worthy of note that this plant (in common with others of the genus) is sometimes acrid and injurious when grown in damp soils. It is, doubtless, capable of much improvement by careful cultivation. This plant is not endemic in Australia." Ciclospermum leptophyllum Ciclospermum leptophyllum (also, "Cyclospermum l.") is a species of plant in the celery family known by the common names marsh parsley, slender celery and fir-leaved celery. This is a plant found worldwide at warm temperate to tropical latitudes and is considered a noxious weed in many areas. It is a taprooted branching herb reaching just over half
Celery to the season of the year, and, after one or two thinnings and transplantings, they are, on attaining a height of , planted out in deep trenches for convenience of blanching, which is effected by earthing up to exclude light from the stems. In the past, celery was grown as a vegetable for winter and early spring; it was perceived as a cleansing tonic, welcomed to counter the deficiencies of a winter diet based on salted meats without fresh vegetables. By the 19th century, the season for celery had been extended, to last from the beginning of September to late