Asclepias tuberosa

Eryngiums are very robust plants that grow well in full sun and can be tolerant to drought. The plants bear spikey cone-shaped flowerheads in blue and silver-grey tones. Spent flowerheads give winter interest to your border, so don’t cut them back straight away.

Tall blue flower spikes sit on a bed of yellow-green scented foliage. The flower spikes can reach up to 90cm and attract pollinators with their sweet fragrance. Flowers appear in mid-summer which makes thnis plant perfect for adding colour to your garden for later in the season. Agastache can be planted in containers for the first season and then be planted into your garden border for the following seasons.

This lovely cottage garden plant has spikes of purple-eyed white flowers that shoot up from glossy dark evergreen foliage. Flowers emerge from early summer and bloom right the way until early autumn. This plant is a biennial, so avoid cutting back spent flowers to allow them to self-seed.