About the middle of June stop them all over. At the end of September put them in 48's and shut them up in a close warm house and keep them well syringed. After a week of this treatment give them air by degrees, and as they come into flower take them to the conservatory. They ought to be compact, round-headed bushes, completely covered with flowers.

The only insect that seriously injures the chrysanthemum is the celery fly (Tephritis onopordinis). The maggot of this fly burrows within the leaf of the plant and causes, first, a pellucid pellicle, and subsequently the death of the leaf. The cultivator must occasionally make search for the maggot and destroy it by pressing the pellicle between finger and thumb. To remove it from the leaf is impossible, as it occupies the substance between the upper and under surfaces.