Zinnia Grow Kit | Seeds In A Cup®

Zinnias are the kind of flower that makes a garden feel alive. Bold, fast-growing, and absolutely covered in color from midsummer through fall, they're one of the most rewarding flowers you can grow from seed — and one of the easiest. The Seeds In A Cup® Zinnia Grow Kit is for the beginner who wants a guaranteed win, the apartment dweller who wants a pop of color on the balcony, the gardener who wants to attract butterflies and pollinators, and anyone looking for a cheerful, low-effort gift. It's a great housewarming present, a teacher appreciation gift, a Mother's Day surprise, or a simple way to brighten up a patio or porch. Growing zinnias from seed beats buying a plant because you get more blooms, more variety, and the satisfaction of knowing you started it yourself.

What's Inside

• Premium Non-GMO Zinnia Seeds (Zinnia elegans) — Batch-tested for high germination rates, responsibly sourced in the USA.
• Nutrient-Rich Potting Soil — Real loose premium potting soil, pre-measured and ready to use. Hand-packed in Cleveland, Ohio.
• Recyclable Planter Cup with Lid — 100% recyclable eco-friendly planter. The lid serves as a humidity dome during germination and a saucer afterward.
• Illustrated Growing Instructions — Clear, beginner-friendly step-by-step guide. Made in the USA.

How to Grow

1. Fill the cup — Pour the included soil into the planter, leaving about ½ inch from the top.
2. Sow the seeds — Sow zinnia seeds about ¼ inch deep: press each seed gently into the soil and cover lightly. Zinnia elegans sprouts best when it's shallow enough to feel the warmth but covered enough to stay evenly moist.
3. Water gently — Moisten the soil thoroughly. Keep consistently damp during germination — zinnias like warmth and moisture to sprout.
4. Provide warmth and light — Zinnias germinate best in warm conditions (65–70°F+). A sunny windowsill or warm spot indoors works well to start.
5. Germination window — Zinnias are fast sprouters: expect seedlings in 5–10 days under good conditions.
6. Transplant outdoors — Once seedlings are 2–3 inches tall and nighttime temps are consistently above 50°F, transplant to a sunny outdoor spot or larger container. Zinnias thrive in full sun and bloom prolifically through summer and fall.

How It Compares

Ways to Use It

• Patio or balcony container garden — Start indoors, then transplant to a large pot on your balcony or patio. Zinnias bloom all summer and attract butterflies, bees, and hummingbirds.
• Cut flower garden gift — Zinnias make excellent cut flowers. Give this kit to someone who loves fresh flowers in the house — they'll be cutting their own bouquets by midsummer.
• Classroom pollinator project — Teach students about pollinators, flower anatomy, and the life cycle of an annual. Zinnias are fast enough to show real progress within a school unit.

Our Seed Grow Promise

Zinnias are reliable, but we back every seed we pack. If your seeds don't sprout, we'll replace them — free of charge. Contact our team in Cleveland and we'll send a replacement right away.

Questions Customers Ask

Q: Can I grow zinnias indoors permanently?
A: Zinnias are sun-lovers and do best outdoors or in a very bright, warm indoor space. They're ideal for starting indoors and transplanting outside once the weather warms up.

Q: When should I start zinnias from seed?
A: Start indoors 4–6 weeks before your last frost date, or direct-sow outdoors after frost danger has passed. In most of the US, that's April through May.

Q: Do zinnias come back every year?
A: Zinnias are annuals — they complete their life cycle in one season. But they self-seed readily, so you may find new plants popping up the following year in the same spot.

Q: Are zinnias safe for pets?
A: Zinnias (Zinnia elegans) are generally considered non-toxic to cats and dogs.

Shipping & Details

Ships in 1–2 business days from Cleveland, OH. Hand-packed by our small team in the Midwest. 100% recyclable packaging.