Some perennials that are somewhat salt tolerant. Sea thrift (Armeria maritima)

'Powis Castle' Artemisia

'Silver Mound' Artemisia )

'Karl Foerster' reed grass (Calamagrostis acutiflora)

Cheddar pink (Dianthus gratianopolitanus)

'Elijah Blue' Blue Fescue Grass (Festuca glauca)

Lenten rose (Helleborus orientalis)

Daylily (Hemerocallis spp.)

Hosta

Candytuft (Iberis sempervirens)

Sea lavender (Limonium latifolium)

Lilyturf (Liriope spicata)

Fountain grass (Pennisetum alopecuroides)

Sedum 'Autumn Joy' (Sedum spectabile)

Little bluestem (Schizachyrium scoparium)

Barren strawberry (Waldsteinia fragarioides)

Adam's-needle Yucca Yucca (Yucca filamentosa)

Obviously some of these wouldn't work but maybe some of them. Little Bluestem Carousel is a shorter variety about 30 in. when in bloom or less.

The following are listed some of the longer blooming salt tolerant flowers:
Yarrow get a lemon yellow - gorgeous with blues
Campanula (Bellflower)self seeds
Chrysanthemum - lemon yellow or "yellow quill"
Hemerocallis (Daylily)
Monarda (Bee Balm)red or fuchsia invasive - plant in its pot
Penstemon (Beardtongue)"Red Huskers" - beautiful blousy white bloom
Sedum (Stonecrop)common edger with yellow bloom

You may have noticed I stuck with a yellow, blue, white color scheme with a jolt of red or fuchsia. I would suggest adding an annual blue spike like dark "angelonia"for consistent color from planting to frost. You might want to add some of the rust resistant zinnias for a blast of color.
Have fun with your new garden.
gramma jan

Thanks for the ideas. I will look up the ones I don't know and start planning soon. Planning gardens get's me through the winter.

I didn't get a notice when you answered I will have to check what is up.

I know what you mean, planning my containers and additions or changes to my beds keeps me going till I see green again. Sure wish we could get some rain.