Hemerocallis

Hemerocallis (Day Lilies) can be deadheaded daily to prolong their flowering period.
 

Alstroemeria

Where Alstroemeria are grown for pure display or cut flower, should have their stems “pulled” and not just cut.  This initiates more flowering stems.  Where growing for cut flower re-cut the stems before putting into water.
 

Dahlia

Dahlia ‘Bishop of Llandaff’ and other cultivars should be deadheaded regularly to keep them flowering.  They also need plenty of food and water.
 

Anemone

Anemone japonica and it’s cultivars make a fine display in sun or semi-shade but they may need their roots physically contained to stop them spreading too far.

Bulbs

Now is the time to plant Spring Flowering Bulbs of your choice.  Squirrels and mice love digging up and eating newly planted Crocus and Snowdrops.  To prevent them “sniffing” out the bulbs scatter bits of grated scented soap around which should deter them from finding the bulbs.  One of our care articles covers planting bulbs in pots, the procedure is the same outside.

Tree Paeonies

September is the ideal time to collect seeds from Tree Paeonies.

Crocosmia

Crocosmias should now be at their best.  Deadhead them if you do not want them to naturalise by seeding over the garden.