agapanthus twilight zone - Gardening
The white one, Agapanthus companulatus 'Albus', is zone 6 winter hardy. I had to put it in a pot as the place I was going to put the bulb was full of annual poppies at the time the bulb arrived. Agapanthus inapertus, sometimes called "drooping agapanthus," is noted for its pendulous, very tubular flowers that bloom in late summer or early fall.
Understanding the Context
Flowers are usually deep blue (occasionally white), and some cultivars are almost navy blue, such as Agapanthus inapertus subsp. pendulus ‘Graskop'. Strappy leaves are narrow and gray-green ... Agapanthus, Dwarf Blue Lily of the Nile, African Lily 'Peter Pan Blue' A thread in the Pacific Northwest Gardening forum, titled deer ate my agapanthus!
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Key Insights
Here in Seattle I grow the purple agapanthus with ease. The ones close to the brick wall with a Western exposure can't really take the heat, but they still hang in there. The variety I bought without any research from the nursery has far smaller flower heads than what you'll see in So. Cal. but I'm satisfied with their performance.