Name: Organic 'Giant Coral' Zinnia Seeds
Brand: Gaia
SKU: GAI-SEMENCES
Price: 4.99 CAD
Availability: InStock

Sale Sold out

Certified organic open-pollinated heirloom seeds Asteraceae

Gaia

Zinnia elegans

From seed to harvest

Common name‘Giant Coral’ Zinnia; giant coral common zinnia

FamilyAsteraceae

GenusZinnia

Specieselegans

TypeCertified organic open-pollinated heirloom seeds

Botanical nameZinnia elegans

Organic 'Giant Coral' Zinnia Seeds (Zinnia elegans). This open-pollinated heirloom annual produces large, fully double flowers in vibrant coral-pink shades. Gaia highlights strong long stems, good bouquet performance, high cutting yield, heat tolerance, and pollinator appeal. The packet contains approximately 15 organic seeds certified by Ecocert Canada, and lot GO24212 reports germination above 85%. Kew accepts Zinnia elegans, an annual in the Asteraceae family native from Mexico to Nicaragua. Its warm coral colour creates a strong focal point in a sunny garden. It suits bold borders, home cutting beds, and summer floral arrangements. For practical seed starting, growing from seed succeeds best when the verified product depth, moisture and temperature guidance is followed.

Sow indoors approximately 4 weeks before the last frost, or direct sow approximately 1/8 inch deep after frost danger has passed. Gaia lists germination in 5 to 24 days at 20 to 25°C, with an optimum of 23°C; a separate note says emergence may begin in 3 to 5 days. Transplant gently when true leaves appear, before roots become crowded. Grow in full sun and loose, fertile, well-drained soil. Space plants 12 to 18 inches apart and rows 24 to 36 inches apart to support light penetration and airflow around the foliage. Use the product details as a clear guide on how to start seeds while keeping the growing medium evenly moist, never saturated. For indoor seed starting, count back from local conditions and frost dates to decide when to start indoor seeds.

Gaia lists 75 to 85 days to maturity, height of 3 to 4 feet, and width of 12 to 18 inches. For bouquets, cut firm stems before flowers open completely and place them promptly in clean water. Remove faded blooms regularly to support additional buds through summer. Support may be useful on windy sites. Gaia also identifies the flower as edible: use only petals from plants grown without treatments not labelled for food crops and remove the more bitter central disc before serving. This careful harvest keeps both bouquet and culinary uses clearly separated.

Light and life cycle

In the garden

Exposure: Full sun
Life cycle: Annual

Sowing and germination

Sowing guide

Sowing & germination

Sowing depth

Approximately 3 (3 mm (1/8 in)) for direct sowing according to Gaia

Spacing / density

20 to 46 cm (8 to 18 in) between plants and 61 to 91 cm (24 to 36 in) between rows

Germination temperature

20 to 29°C; Gaia’s published optimum is 23°C

Germination time

Allow 5 to 24 days according to Gaia’s technical table; a lot note states that emergence may begin in 3 to 5 days

Sowing period

Indoor sowing approximately 4 weeks before the last frost, or direct sowing after frost danger has passed

Propagation

Direct sowing or a short indoor start followed by gentle transplanting

Growing method

For 'Giant Coral' Zinnia; giant coral common zinnia, follow these sowing and growing guidelines for the variety. Sow indoors approximately 4 weeks before the last frost, or direct sow approximately 1/8 inch deep after frost danger has passed. Transplant gently when true leaves appear, before roots become crowded. Approximately 1/8 in (3 mm) for direct sowing according to Gaia 20 to 29°C; Gaia's published optimum is 23°C Allow 5 to 24 days according to Gaia's technical table; a lot note states that emergence may begin in 3 to 5 days Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots. Move seedlings into bright light as soon as they emerge and rotate containers regularly to encourage balanced growth. Where several seedlings compete for the same space, thin carefully and retain the strongest plants without disturbing their roots. Before outdoor planting, gradually acclimatize young plants to wind, sunlight, and changing temperatures over several days. Follow the stated spacing so air can move between plants and each plant receives adequate light, water, and nutrients. This seed starting sequence supports reliable growing from seed while preserving the product-specific depth and temperature facts.

Soil and care

Soil & care

Care level

Easy

Watering

Water at soil level when the surface begins to dry and maintain even moisture during establishment. Avoid saturated roots and frequent wetting of foliage. A light mulch applied after soil warms helps reduce splashing and moisture fluctuations. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.

Soil type

Choose loose, fertile, well-drained soil that retains even moisture without remaining saturated. An airy full-sun position shortens the time foliage stays wet. Incorporate mature compost before planting and avoid excess nitrogen, which promotes soft stems at the expense of flowers. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.

Fertilization

Incorporate mature compost before planting and fertilize moderately according to soil fertility. Excess nitrogen produces abundant foliage and weaker stems without guaranteeing more flowers. For best results, favour steady growth and water after applying fertilizer. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.

Seasonal care

For ‘Giant Coral’ Zinnia; giant coral common zinnia, adjust seasonal care to the plant’s actual growth cycle. Sow indoors approximately 4 weeks before the last frost, or direct sow approximately 1/8 inch deep after frost danger has passed. Transplant gently when true leaves appear, before roots become crowded. Approximately 1/8 in (3 mm) for direct sowing according to Gaia 20 to 29°C; Gaia’s published optimum is 23°C Allow 5 to 24 days according to Gaia’s technical table; a lot note states that emergence may begin in 3 to 5 days For bouquets, cut stems before flowers are completely open and place them promptly in clean water. Tomatoes, Marigold, Basil, Alyssum, Beans, Kale, Zucchini, Cosmos. The packet contains Approximately 15 seeds. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots. Move seedlings into bright light as soon as they emerge and rotate containers regularly to encourage balanced growth. Where several seedlings compete for the same space, thin carefully and retain the strongest plants without disturbing their roots. Before outdoor planting, gradually acclimatize young plants to wind, sunlight, and changing temperatures over several days. Follow the stated spacing so air can move between plants and each plant receives adequate light, water, and nutrients.

Growing in containers

Container growing

Recommended pot size

Container holding at least 15 to 20 L and 30 cm (12 in) deep per plant, with drainage

Growing ‘Giant Coral’ Zinnia; giant coral common zinnia in a container requires suitable volume, drainage, and exposure. 10 to 15 L per plant with free drainage. Match the container to the plant's development and provide free drainage from planting onward. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots. Move seedlings into bright light as soon as they emerge and rotate containers regularly to encourage balanced growth. Where several seedlings compete for the same space, thin carefully and retain the strongest plants without disturbing their roots. Before outdoor planting, gradually acclimatize young plants to wind, sunlight, and changing temperatures over several days. Follow the stated spacing so air can move between plants and each plant receives adequate light, water, and nutrients. Water at soil level when the surface begins to dry, then adjust frequency for weather, drainage, and container volume. A light mulch can reduce splashing and moisture swings after the soil has warmed and plants are established.

Growth and harvest

Size, flowering & harvest

Mature height

0.9 to 1.2 m (3 to 4 ft)

Width / spread

30 to 46 cm (12 to 18 in)

Flower color

Vibrant coral pink

Foliage color

Medium green

Foliage type

Annual opposite foliage with slightly rough ovate to lance-shaped leaves

Growth rate

Fast

Growth habit

Tall, upright, branching, and sturdy

Bloom period

Large, fully double coral-pink flowers, long lasting on strong long stems Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots.

Garden companions

Garden associations

Companion plants & uses

Companion plants

Gaia associates this lot with tomatoes, marigolds, basil, alyssum, beans, kale, zucchini, and cosmos. Preserve enough spacing for light, airflow, and pollinator access; companion planting does not replace appropriate watering or disease monitoring. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots.

Plants to avoid

Gaia recommends keeping this zinnia away from comfrey, squashes, cucumbers, pumpkins, and gourds. This supplier guidance does not replace crop rotation, good spacing, or regular foliage inspection.

Garden use

In the garden, place ‘Giant Coral’ Zinnia; giant coral common zinnia according to its habit, vigour, and access for harvest. Place Giant Coral in full sun at the back of a border or in a cutting garden. Group several plants for a coral-pink display while preserving 12 to 18 inches between plants and 24 to 36 inches between rows. Stems reach 3 to 4 feet, so discreet support can protect them from wind. Water at soil level when the surface begins to dry, cut flowers before they open completely, and remove faded heads to extend the summer display. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots. Move seedlings into bright light as soon as they emerge and rotate containers regularly to encourage balanced growth. Where several seedlings compete for the same space, thin carefully and retain the strongest plants without disturbing their roots. Before outdoor planting, gradually acclimatize young plants to wind, sunlight, and changing temperatures over several days. Follow the stated spacing so air can move between plants and each plant receives adequate light, water, and nutrients.

Frequently asked questions

How many 'Giant Coral' Zinnia seeds are in the packet?

For ‘Giant Coral’ Zinnia; giant coral common zinnia, the packet information states: Approximately 15 seeds · lot GO24212 · germination >85%. This wording preserves the commercial approximation when one is provided and helps plan the number of containers or the length of the row without turning an estimate into a guaranteed count. Keep the packet closed in a cool, dry, dark place until sowing time. Keep the label with the seedlings so the variety remains correctly identified throughout the season. Use clean containers and write the sowing date on a water-resistant label. Avoid exposing unused seed to moisture or large temperature swings.

How should I start 'Giant Coral' Zinnia seeds in Canada?

For 'Giant Coral' Zinnia; giant coral common zinnia, the stated sowing period is Indoor sowing approximately 4 weeks before the last frost, or direct sowing after frost danger has passed. The recommended method is Direct sowing or a short indoor start followed by gentle transplanting, at a depth of Approximately 3 (3 mm (1/8 in)) for direct sowing according to Gaia. Follow these product-specific directions and adjust timing to the average last-frost date in your area. Moisten the growing medium before placing the seed so the first watering does not displace it. Label every container and maintain even moisture without allowing standing water. Move seedlings into bright light as soon as they emerge to encourage balanced growth. For seed starting, label the cultivar and use the stated sowing depth instead of a generic estimate.

How long do 'Giant Coral' Zinnia seeds take to germinate?

For 'Giant Coral' Zinnia; giant coral common zinnia, the stated germination period is the detailed directions in the product record, with a germination temperature of 20 to 29°C; Gaia's published optimum is 23°C. Keep these conditions as steady as practical while allowing excess water to drain away. The temperature of the growing medium matters more than the surrounding air during this stage. Check moisture below the surface before watering again and avoid saturating the medium. Good air circulation helps young plants remain vigorous after emergence. Wait until the normal germination window has passed before assuming a seed will not emerge. When growing from seed, keep conditions stable for the full stated germination window before disturbing the mix.

Where should I grow 'Giant Coral' Zinnia in the garden?

For ‘Giant Coral’ Zinnia; giant coral common zinnia, the recommended exposure is Full sun. The stated spacing guideline is the detailed directions in the product record. For container growing, the product record recommends: Container holding at least 15 to 20 L and 30 cm (12 in) deep per plant, with drainage. Allow for the mature habit so neighbouring plants do not restrict light or access for harvest. Choose a site that is easy to water and leave enough room for air to circulate around the foliage. In a container, make sure several holes allow excess water to drain freely. A light mulch can steady moisture after the soil has warmed and plants are established.

When and how should I harvest 'Giant Coral' Zinnia?

For ‘Giant Coral’ Zinnia; giant coral common zinnia, the confirmed edible parts are: Petals from flowers grown without treatments not labelled for food plants; remove the more bitter central disc. Harvest them at the stage stated in the product record, then sort the crop before preparation. Use only the parts correctly identified as edible for this plant. Use a clean tool and handle the harvest carefully to avoid unnecessary injury to the plant. Harvest in dry weather when practical and remove damaged portions promptly. Wash only the parts intended for the kitchen and refrigerate perishable produce promptly. Never eat a plant part whose identity or edibility is uncertain.