Bidens can be very vigorous and fast growing, and can soon fill a large space in a basket. To prevent it from dominating the basket, plant it with other vigorous varieties like Surfinias®, Helichrysum, trailing Geraniums or giant Fuchsias.
These plug plants will need potting on into a 9 or 10cm pot and growing on in a greenhouse or on a sunny windowsill. They can also be planted straight into hanging baskets as long as they are kept in the warm. They need to be kept at a minimum of 7 degrees celsius. We recommend that you keep your plug plants quite dry in the early stages of growing to encourage root growth. However it is very important not to let them dry out completely! The compost should be kept moist, not waterlogged, but also not dry and dusty.
Once the risk of frost has passed your plants can go out in the garden. Plant in full sun. Feed weekly when they are in flower with a good quality multipurpose feed. Water regularly to prevent them from drying out. Watering is best done in the morning or evening instead of when the sun is at its strongest, to prevent the leaves from being scorched.