After planting the space between the rows of tulips may be planted with such plants as forget-me-nots, wallflowers, silenes, violas, double white arabis, polyanthuses, &c., to obtain beautiful colour combinations in spring.
Tulips are readily raised from seeds, and the seedlings when they first flower (after about 7 years cultivation) are of one colour - that is, they are self-coloured.
Tulips flourish in any good garden soil that has been deeply dug or trenched and manured the previous season.
Tulips are usually increased by offsets, which most varieties produce in fairly large numbers.
North of Haarlem to twice that distance south, hyacinths, tulips, narcissus and crocuses being the flowers chiefly cultivated.