We are moving to a last Summer month. Many plants finished flowering and require trimming deadheading or tidying.
Lavender plants need a light trim all over as soon as the flowers are past. Take off approximately an inch of this year grow. This will stimulate the plant become more bushy from below.
If you have a bumblebee nest - don’t panic: they die out naturally in autumn. Your garden is wildlife friendly!
Queens take off into the wider garden to overwinter, and can sometimes return to the same nest, so if yours is in an awkward spot, wait until winter then block off the entrance. She will find another spot next spring.