Gigantic upright agaves and large flax phormium add drama.
White flowering plants for hanging over a wall.
Vines are among the best plants to cover walls since they climb naturally.
Try milliflora which blooms continuously without the need for pinching or multiflora which performs in hot wet summers.
The delicate blooms and exquisite blues purples and whites of lobelia make it an excellent choice for everything from garden borders and window boxes to hanging plants perfect for your porch.
Passionflowers produce interesting flowers.
23 of 24 wave petunias petunia x hybrida.
If you have a green thumb you could get your string of pearls plant to bloom white flowers.
There are a variety of plants suitable for this situation but the three plants i have trailing over my dry stone wall are arabis aubrieta and saponaria.
Some vines like ivy are true climbers that use aerial roots to hold on to surfaces.
Vinca plants are often used as a flowering ground cover such as vinca minor so it s a natural for trailing over the sides of containers.
Petunias have always been a classic favorite for hanging baskets but some gardeners have given up on them after struggling with plants bedraggled by disease and rainstorms.
Bacopa also known as sutera cordata has trailing stems and small single flowers in white pink or mauve which appear through summer and beyond.
In the photo silvery green helichrysum cascades over the edge.
Passiflora spp commonly known as passionflower and actinidia spp known as kiwi vines grow quickly and can be planted behind or in front of the wall.
Their plump round pearls are filled with water to help them survive long periods of drought.
Arabis caucasica is a perennial which grows to 9 inches high and spreads to about 24 inches.
Others like honeysuckle twine their stems around hand holds.
You ll have to put in a support to allow these to climb.
Herbs such as the huntington carpet rosemary rosmarinus officinalis huntington carpet also cascade down retaining walls when planted close to the wall s edge.
All the plants need very little water.
If you want blooms all season long though you ll want the madagascar periwinkle rather than vinca minor which blooms mainly in the spring.
This plant s sprawling nature is perfect for homes with high ceilings or lots of empty vertical space that s in need of fresh decor.