Hi there. You walk into a garden center and the color hits you all at once, rows of orange, magenta, electric blue.

But not every bright flower holds that color through a hot summer. Some fade by July. Others keep going until the first cold night. Knowing which is which saves you a lot of replanting.

Zinnias hold color all season

Zinnias are the workhorse here. A single packet of Benary's Giant zinnias gives you coral, purple, scarlet, and a yellow that stays yellow instead of washing out to cream. They bloom from early summer into fall if you deadhead them. One catch, they hate wet roots. Plant them in full sun and let the soil dry between waterings, or you'll get powdery mildew on the lower leaves by August.

Marigolds earn their orange

Marigolds are the flower people plant once and then never stop planting. The French marigold varieties like Bonanza mix deep orange and rust on flowers barely two inches across. They're cheap, they sprout in about a week from seed, and they tolerate poor soil better than most annuals. That bright color comes with a strong scent, which is why a lot of gardeners run a border of them along the vegetable patch.

Cosmos for pink that never quits

Cosmos bipinnatus, especially the Sensation series, throws out pink and white flowers on stems tall enough to cut for a vase. The plants get leggy in rich soil, so don't fertilize them. Give them average dirt and full sun and they'll flower from midsummer right up to frost. Pinch the tops once when they're a foot tall and you'll get a bushier plant with more blooms.

Red flowers bring the red

You can't talk about vivid color without the Oriental flower. One bloom on a mature plant can measure six inches across, and the red varieties like Beauty of Livermore are genuinely hard to look away from. The trade-off is timing. They flower for a couple of weeks in late spring, then the foliage dies back and the plant goes dormant. Mark where they are so you don't dig them up by accident.

Blue is the hard one

True blue is rare in flowers, which is why delphiniums and cornflowers stand out so much. Annual cornflowers, Centaurea cyanus, give you that deep blue with almost no effort, just scatter seed in early spring. Delphiniums are the showier choice but fussier, they need rich soil, staking, and cool summers. In a hot climate the tall spikes flop over before they finish opening.

Sweet peas mix scent with color

Sweet peas come in pastels and strong bicolors, and the Spencer varieties are the ones with the strongest fragrance. You need to start them early, get them climbing on a trellis, and keep picking the flowers or the plants stop producing. A row along a fence gives you cut flowers for weeks.

Bright color in a garden comes down to picking plants that keep their pigment under heat and sun, then giving them the light and drainage they want. Zinnias and marigolds carry you through the whole season with almost no fuss. Try one new variety next spring and see how it holds up in your own soil.