My designs are guaranteed to bloom and look pleasing 12 months out of the year.  I also strive to do low water designs --as water conservation is a high priority with me.   To meet this standard I use a lot of Texas natives [most of my designs are 50-75 percent native].  I also use antique roses; herbs and some well adapted plants that are drought tolerant.  The following list is one I use to help me paint my year round canvas.

Winter Interest & Early Spring Bloomers
Possum Haw--like a tree on fire with berries
White Honeysuckle Bush--sweet fragrance
Diviracata Phlox--electric and fragrant
Pilosa Phlox--fragrance -WOW-soft pink
Wine Cup--great showy ground cover
Texas Columbine--yummy yellow
Larkspur--brilliant blues

Spring-Late Spring [some of the above]
Calylophus--lasts until November
Lanceleaf Coreopsis--until June
Purple Cone Flower-butterflies love it
4 Nerve Daisy-blooms off and on most of the time
Mealy Blue Sage--blooms until frost
Shrubby Skull Cap--blooms until frost
Skeleton-Leaf Golden Eye--blooms until frost

Summer [some of the above]
Butterfly Weed--wispy and colorful--major attraction!
Desert Willow--like little orchids all Summer
Flame Acanthus--lasts to frost--attracts hummingbirds
Red Yucca--lasts to frost--attracts hummingbirds
Lantanas--butterflies love them
Rock Rose--pretty in pink
Esperanza--lasts until frost--sunshine in the garden

Fall [some of the above]
Violet Silverleaf--very showy with purple blooms
Gulf Mulhy--looks like pink fire or mist in mass
Eupatorium--butterfly magnet--blue or white
Turks Cap--humming birds will come to this
American Beautyberry--purple is my choice
Fall Senna--this gets your attention

Natives that are evergreen and bloom  [most years] all year long if trimmed right.
Salvia Greggii--White, Pink, Red will bloom all year [unless it is freezing] if you trim them back by 1/3 every 2 months
Blackfoot Daisy--if you don't let it get too woody--keep it trimmed up by cutting back to the last node about 3 times a year whenever it gets overgrown and tired looking--these get so heavy with bloom that they will pull themselves out of the ground--if you use a garden staple [bent wire] to secure it at the base this won't happen.