Choose a sunny spot.
Use full sun and well-drained soil. Keep tall plants where they will not shade shorter companions.
ROY G. BLOOM™ Rainbow Garden Collection
Plant your palette.
Explore the collection →Your packet-by-packet planting guide
Give each color its own place.
Plant each packet separately so you can follow its sowing depth, spacing and seasonal window. Clear weeds and grass, loosen the soil surface and water gently after sowing.
| Variety | Approx. seeds | Fill weight | Sowing depth | Final spacing | When to plant |
|---|---|---|---|---|---|
| R · Cherry Queen ZinniaZinnia elegans | ≈ 225 | 1.5 g | ¼ in | 9–12 in | After the last frost; warm soil |
| O · Orange King ZinniaZinnia elegans | ≈ 225 | 1.5 g | ¼ in | 9–12 in | After the last frost; warm soil |
| Y · Canary Bird ZinniaZinnia elegans | ≈ 225 | 1.5 g | ¼ in | 9–12 in | After the last frost; warm soil |
| G · Envy ZinniaZinnia elegans | ≈ 225 | 1.5 g | ¼ in | 9–12 in | After the last frost; warm soil |
| B · Tall Blue CornflowerCentaurea cyanus | ≈ 400 | 2 g | ¼ in | 8–10 in | Early spring; fall in mild climates |
| I · Blue SageSalvia farinacea | ≈ 500 | 0.6 g | Surface sow; leave uncovered | 12 in | Start indoors; transplant after frost |
| V · Purple Prince ZinniaZinnia elegans | ≈ 225 | 1.5 g | ¼ in | 9–12 in | After the last frost; warm soil |
Packets are filled by weight. Counts are estimates, not exact guarantees; natural seed size varies by lot. The packet estimates add to approximately 2,025 seeds. Total net seed weight: 10.1 g.
Start with steady moisture.
Keep the seedbed evenly moist through germination, without waterlogging. Thin to the spacing above and water as needed while roots establish.
Let the seasons guide you.
Cornflowers favor a cool start; zinnias favor warm soil after frost. Flowers develop in stages, so the whole collection may not bloom together.
Blue Sage is Salvia farinacea. Surface sow indoors and leave the seed uncovered; light aids germination. Transplant after frost and thin to about 12 inches apart.
A garden plan, planted your way
A suggested 200 sq ft footprint.
The illustrated 20 × 10 ft layout includes 160 sq ft of planting beds and a 40 sq ft central access path. Red, orange, yellow and green share one side; blue, indigo and violet share the other.
This is a suggested layout, not a tested broadcast coverage rate. The packets are planted individually; the area you fill depends on spacing, establishment and how many plants you choose to grow.
