but generally can reach up to 300cm

Delphinium Highlander Sweet Sensation is a herbaceous perennial produces lovely flowers that are full of colour

One suggestion

it will eventually lose its leaves in preparation for winter

In midsummer

Gardeners Dream Extra Strong Weed Suppressant Membrane Kit (3 Metre Width) Size:3m x 30m + 100 Pegs but generally can reach upGardeners Dream Extra Strong Weed Suppressant Membrane offers a tougher and more durable solution for controlling weeds in your garden. Manufactured to 125gsm with tough tightly woven polyethelyne, this sheeting will block weeds from peeking through while still giving plant life and soil the moisture they require, combating soil erosion while keeping your garden weed free. Extremely versatile, this fabric can be used in a variety of popular locations