Yucca flaccida - FLACID-LEAF YUCCA (ADAM'S NEEDLE)

Bigger architectural native perennial with gray-green sword like leaves.

Distinguishing feature are the leaves that bend downward - the outer leaves are recurved, or bending back on itself, leading to a floppy appearance.

Blooming Time: white flowers arranged in large panicles appear in early to mid summer (late May to June/early July, depending on your zone)
Size: usually 3' tall x 4' wide, in time grow into wider clumps/tiny colonies. Height with flowers up to 5'. Moderately to slow growing plant
USDA Zones: 4-9
Culture: full sun, half sun, half shade (yucca is surprisingly tolerant to some shade!). Adaptable to virtually any soil conditions, excluding constantly wet or waterlogged soils. Prefers somewhat  drained soils, but will grow anywhere, even in the clay. The best soils are average, loamy, poor quality, shallower soils (gritty, rocky, sandy, infertile).
Moisture Needs: average (medium) to medium-dry to dry, very drought tolerant.
Origin: native to southeast and eastern USA, see the BONAP distribution map.

Black walnut tolerant: yes
Deer/Rabbit Resistant: yes / yes
Attracts Butterflies or Pollinators: yes / also small amount of specialized insects, moths are the main pollinators
Attracts Hummingbirds: yes - attract hummers and small song birds
Pot Size: square 3.5" x 5" deep perennial pot

Plant combinations: Naturally looks very good with rocks.Drier flower beds, cottage gardens, exotic, xeric, large rock gardens, sloped and terrase gardens, eclectic, modern gardens, deer resistant plantings, naturalistic gardens, coastal gardens, or even edges of rain gardens. The best combinations are with smaller-leaved, smaller, groundcovering plants, succulents and fine-leaved grasses that support the majestic and unusual look. But looks well even with larger plants.

Good companions can be Artemisia, Agastache, Catanache caerulea, Eriogonum, Eryngium, Euphorbia, Gaillardia, Gypsohilla repens, Nepeta, Lavandula, Linum lewisii, Opuntia, Phlox subulata and other creeping phloxes, Scabiosa, various Salvia, Veronica. But can be combined with many plants on the average to drought tolerant scale like Achillea, shorter Aster, Echinacea, Paeonia, bearded Iris, Perovskia, Platycodon, Sedum and medium to taller grasses (Muhlenbergia, shorter Panicum, Pennisetum, Sporobolus, Schizachyrium).

Picture copyright: William Avery, Commons Wikipedia