Jun, Jul, Aug
At its best:
Jun, Jul, Aug, Sep
Water pots daily, particularly bedding plants, and twice daily in the heat of summer - morning and evening. Water with half-strength feed twice a week to ensure plants have all the nutrients they need.
Pick off dead flowerheads regularly. If you leave them in place they can start setting seed and this triggers an end to flowering, so removing them will encourage the plant to flower again.