Beautiful - Lupins are essential for any cottage garden.
Normally Lupins planted in the ground do not need feeding but to extend their flowering season and for brighter colour a high potash feed is best.
Container grown Lupins will require a high potash feed like Mary & June's Garden 'High Potash and seaweed' plant food.
Lupins should be planted in full sun and tall perennials Lupins will benefit from a sheltered position.