It's August, and most of my lavender has flowered, and is looking past its best. So I've trimmed it back neatly, and saved the cuttings.
Over a few evenings, while watching TV, I removed all the flowers from the cuttings. It was a repetitive but relaxing task. The flower heads went into a large baking tray, and sat for a few days, drying out, in a warm light room.
After I'd dried them, I parcelled them up into sachets, and popped them into my drawers. You don't need very many plants: I collected enough lavender to make nine sachets from three or four mature shrubs.
The cuttings went into a bucket. I covered them with water and left them for about 5 days. Then I removed them, and sprayed the lavender water all over my red berberris hedge.
Yes, lavender makes your pillow cases smell nice, repels moths from wool, and smells lovely in the bath. But it also appears to repel rabbits, and I have a real rabbit problem at Neats Home Garden. They eat anything - even spiky, prickly berberis and holly - and menace my veg patch. So I took some advice from a no-chemicals gardening friend, and sprayed on my highly scented concoction. So far, so good: the bunnies have stopped nibbling the berberis, at least.
Other plants to use
If you don't have lots of leftover lavender, I have also had success when using cuttings from other strongly scented plants, like sage, curry plant, and verbena. Happy repelling!