sentence: cultivation philip miller wrote of the ease of cultivation of c. ornithopodioides in his 1754 the gardeners dictionary : '' ... will thrive in open air ; so the seeds of this may be sown on a bed of light earth in april ( late spring ) , where the plants are to remain ; and will require no other culture , but to keep them clear from weeds : in june ( early summer ) they will flower , and the seeds will ripen in august ( late summer ) ; and the plants will soon after perish .