Late flowering Charms are similar in habit to the earlier flowering Poppins Series
, but may require greenhouse protection as they do not start flowering until the end of October. They can produce a plant up to 1.2m (4 feet) across if started from a cutting in February. However, good results can still be obtained from plugs received later in the year. Indeed, if started to early they can become so big as to be unmanageable.
On receipt of your plugs, pot up into a 9cm (3.5inch) pot, then pot on as the plants grow, eventually into a 25cm (10 inch) pot. Use a good quality John Innes compost - No. 2 in the smaller pots and then No. 3 for the final potting. Feed regularly, using our tried and tested fertilizer
. Stand outside in a sheltered position for the summer. Charms break naturally, so will not require stopping, although pinch back any long, rogue shoots that appear. During the summer turn the plant regularly to produce an even domed shape.
In a sheltered spot in the garden it is possible for Charms to flower well outside, however, if the weather deteriorates, or in more exposed gardens, it will be necessary to move the pot into a cold greenhouse to continue enjoying the flowers.