Agapanthus 39glenavon39 is a beautiful african blue lily deserving pride of place in your garden with dense rounded umbels of pale blue flowers and a violet stripe down each petal sturdy stems rise to 1m 4033941 above clumps of linear semi evergreen foliage making this hardy perennial useful ground cover too tough and reliable it copes well with most soil conditions but is at its best in a sunny spot plant in large clumps in the middle of the border for an eye45catching