Zinnia

“Grown as Annual” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“Seeds typically germinate in 4 to 7 days” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“60–90 days from direct sowing” — How to Grow Zinnia: 60–90 days — SoilStack

“Zinnias germinate and grow best when soil temperatures are consistently around 70°F.” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“Sun” — Growing Zinnias from Seed | Johnny's Selected Seeds

“Water occasionally, though these plants are fairly drought-tolerant.” — How to Plant and Care for Zinnia Flowers

“pH: 6.3-6.8 preferred” — Growing Zinnias from Seed | Johnny's Selected Seeds

“Annual” — Growing Zinnias from Seed | Johnny's Selected Seeds

“Space plants about 12 inches apart in home gardens” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“Most varieties grow 1 to 3 feet tall” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“Zinnias are best grown from seed” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“4 weeks before planting out” — Growing Zinnias from Seed | Johnny's Selected Seeds

“Plant out when danger of frost is passed in late May/early June” — How to grow zinnia / RHS Growing Guide

“Before completely open. Stem is firm from point of cut to just below the bloom.” — Growing Zinnias from Seed | Johnny's Selected Seeds

“Toxicity Non-toxic” — Planting and Growing Zinnias for Bold Blooms All Season | The Old Farmer's Almanac

“Zinnias are quite resilient, but it’s possible for them to struggle with pests like Japanese beetles, aphids, and spider mites.” — How to Plant and Care for Zinnia Flowers

“Some examples of annuals include sunflowers, cosmos, sweet peas and zinnia” — How to grow zinnia / RHS Growing Guide