Marigolds are the easiest annual for beginners. Bright orange, yellow, and mahogany blooms from early summer to frost. Their pungent foliage deters whiteflies and nematodes, making them a classic vegetable-garden companion.
Sun: Full sun. Water: Low. Zones: Annual. Height: 6 in – 3 ft. Bloom time: Early summer to frost.
Direct-sow after last frost or start indoors 6 weeks earlier. Thrives in average soil — rich soil produces foliage at the expense of blooms. Deadhead regularly to extend flowering. African types grow tall; French types stay compact.
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01 Do marigolds really repel pests?
French marigolds release compounds that suppress root-knot nematodes in the soil. Their scent also deters whiteflies and some beetles. Effect is real but modest — think of them as supporting players in pest management, not a silver bullet.
02 Do marigolds come back every year?
No — marigolds are true annuals that die with the first hard frost. They reseed generously in warm climates, which can look like regrowth. For a reliable return, save seed heads in fall and direct-sow after frost in spring.
03 Why are my marigold leaves yellowing?
Most often overwatering or poor drainage — marigolds prefer dry conditions and average soil. Let soil dry between waterings. If lower leaves yellow and plant looks wilted despite water, check for root rot — the fix is better drainage and less water.