Lilies which have been grown in pots should have their seed heads removed once the petals have all dropped.
The bulbs will waste a great deal of energy developing large seed heads and, if left in place, you may only get a small insipid flower or none at all next year.
Hydrangea flowers start to change colour prior to going dormant and brown. White hydrangeas take on a greenish hue while some of the blues take on purple streaks. If you cut these flowers and hang them upside down to dry out slowly these colours will be retained. An excellent flower arrangement for the winter.
As a precaution losses in a severe Winter you can take off some offsets or cuttings and pot in small pots of gritty free draining compost and keep indoors on windowsills.
Phyllostachys nigra and aurea (Bamboo) should have produced new culmes up to 20ft. high. If you wish to clean up the stems to make them look nicer - this is quite easy to do whilst the growth is still soft. Just pull off the new thin side shoots to about 6ft high.
EchiumsEchiums will be finishing flowering now and setting seed. The old flower stalks may be up to 6 feet tall and slowly go black and die off. Do not be in too great a hurry to cut them down and remove them because they self sow seed copiously as the plants die. Echiums are biennial plants and die after flowering in the second year but will self regenerate themselves very easily.