Vorianseeds

Cosmos Seeds - Pure White

$7.65

Shipping calculated at checkout.

Grow crisp, luminous pure white saucer-shaped blooms with sunny golden-yellow centers.A heat-tolerant, easy-to-grow annual perfect for moon gardens, cottage borders, and summer cutting patches.

CORE POINTS:

Crisp Pure White Saucer Blooms: Large, single, luminous pure white blooms that create a clean, elegant, and refreshing display in the summer garden.
Sunny Golden-Yellow Centers: A bright, textured cluster of golden-yellow stamens glows at the heart of each bloom, adding a cheerful, high-contrast focal point.
Airy, Fern-Like Foliage: The finely cut, feathery, light green foliage creates a soft, delicate texture that beautifully complements the crisp white blooms and adds lightness to the garden.
Extreme Heat Tolerance & Easy to Grow: Thrives brilliantly in hot, dry US summers. It performs best in average, well-draining soil and requires very little maintenance.
Excellent Cut Flower: Long, slender but sturdy green stems make Cosmos a premier choice for effortless, long-lasting, naturalistic summer cut-flower arrangements.

Add a touch of crisp, luminous elegance to your summer garden with these exquisite Pure White Cosmos seeds. This classic annual produces large, saucer-shaped, single blooms in a crisp, pure white hue. The silky, overlapping petals beautifully frame a bright, textured golden-yellow center, creating a cheerful and inviting flower that glows softly in the sunlight. The colorful blooms are elegantly suspended atop slender, sturdy green stems, surrounded by finely cut, fern-like, feathery foliage that adds an airy, ethereal texture to the garden.

Perfectly adapted to thrive in the hot, dry conditions of US summers, this resilient annual is exceptionally easy to grow. It performs best in average, well-draining garden soils without the need for heavy fertilization (which actually reduces blooming). It is a top-tier choice for low-maintenance moon gardens, cottage borders, meadow gardens, and dedicated cutting patches. Its long stems and long-lasting blooms make it a premier, effortless ingredient for elegant, naturalistic summer cut-flower bouquets. Please note: This plant is grown purely for ornamental garden purposes and is not intended for culinary or internal use. Elegant, effortless, and endlessly charming—this Pure White Cosmos is a crisp summer essential for every garden.

📅PLANTING CALENDER(CLICK TO VIEW)

Style: 300 Seeds

300 Seeds

1 Ounce

1/4 Pound

In stock

Quantity

Secure checkout with

Grow crisp, luminous pure white saucer-shaped blooms with sunny golden-yellow centers.A heat-tolerant, easy-to-grow annual perfect for moon gardens, cottage borders, and summer cutting patches.

CORE POINTS:

Crisp Pure White Saucer Blooms: Large, single, luminous pure white blooms that create a clean, elegant, and refreshing display in the summer garden.
Sunny Golden-Yellow Centers: A bright, textured cluster of golden-yellow stamens glows at the heart of each bloom, adding a cheerful, high-contrast focal point.
Airy, Fern-Like Foliage: The finely cut, feathery, light green foliage creates a soft, delicate texture that beautifully complements the crisp white blooms and adds lightness to the garden.
Extreme Heat Tolerance & Easy to Grow: Thrives brilliantly in hot, dry US summers. It performs best in average, well-draining soil and requires very little maintenance.
Excellent Cut Flower: Long, slender but sturdy green stems make Cosmos a premier choice for effortless, long-lasting, naturalistic summer cut-flower arrangements.

Botanical Name: Cosmos bipinnatus (White cultivar)
Genus: Cosmos.
Species: bipinnatus.
Color: Crisp Pure White ray petals with a bright Golden-Yellow center.
Plant Habit: Upright, airy, branching annual with finely cut, fern-like, feathery green foliage.
Light Requirements: Full Sun (6-8 hours minimum). Will bloom poorly in the shade.
Water Requirements: Low to Moderate. Extremely drought-tolerant once established. Do not overwater.
Temperature Requirements: Warm to Hot. Thrives brilliantly at 65°F - 90°F (18°C - 32°C). Frost-tender.
Soil Type: Well-draining, average to lean garden soil. Prefers slightly acidic to neutral pH (6.0 - 7.0). Rich soil causes leggy foliage and few blooms.
Bloom Start: Early Summer (June - July).
Bloom End: First Autumn Frost (October - November).
Pollination: Insect-pollinated (Extremely attractive to butterflies, bees, and hoverflies).
Planting Depth: Surface sow to 1/8 inch (3 mm). Do not bury deep; light is essential for germination.
Life Cycle: Annual.
Plant Height: 24 to 36 inches (60 - 90 cm) tall.
Plant Spacing: 12 - 18 inches (30 - 45 cm) apart.
USDA Zones: 2 - 11 (Grown as a summer annual in all zones; no winter hardiness).
Resistance: Excellent heat and drought tolerance. Good deer and rabbit resistance due to the slightly coarse foliage. Susceptible to: Powdery mildew in crowded, humid conditions with poor air circulation; Aphids. Avoid overhead watering to minimize fungal issues. Warning: Seeds are not intended for direct culinary or internal use.

Crucial Growing Tips: Cosmos seeds are easy to germinate. They do not require cold stratification. They require light to germinate—do not bury them deeply. They are fast-growing and bloom quickly from seed. Avoid over-fertilizing, as rich soil promotes excessive foliage growth at the expense of flowers.

Timing: Direct sow outdoors in mid-to-late spring after the danger of frost has passed and the soil has warmed up. For an earlier start, sow indoors 4-6 weeks before the last frost date.
Site Selection: Requires Full Sun (at least 6-8 hours of direct sunlight daily) for the most abundant blooms. It is highly drought-tolerant once established.
Soil Preparation: Thrives in well-draining, average to poor soil. It prefers lean, sandy, or loamy soils. Do NOT amend with rich compost or nitrogen-heavy fertilizers, as this will prevent blooming.
Sowing: (Indoors) Sow seeds on the surface of moist seed-starting mix. Cover with a very light dusting of soil or press gently into the surface (max 1/8 inch deep), as light is essential for germination. Keep the tray at 65°F-70°F and maintain even moisture. (Outdoors) Scatter seeds lightly over prepared soil and rake in gently.
Watering: Keep the soil lightly moist during germination. Once established, they are highly drought-tolerant; water deeply once a week only during extremely prolonged dry spells. Do not overwater.
Transplanting/Thinning: Harden off indoor seedlings for a few days before transplanting outdoors after the last frost. If direct sown, thin seedlings to the recommended spacing once they have a few sets of true leaves.
Maintenance (Deadheading): To ensure continuous blooming all summer long, deadhead (pinch or snip off) spent flowers regularly. This encourages the plant to produce new buds rather than going to seed.

📏 Planting Density

Cottage Borders & Meadow Gardens: Space individual plants 12 to 18 inches (30-45 cm) apart to allow for airy branching.
Mass Plantings / Cutting Gardens: Space plants 10 to 12 inches (25-30 cm) apart for a dense, unified display.
Container Planting: 1 plant per 10-12 inch diameter pot. Use a well-draining, average potting mix.
Note: Proper spacing is crucial to ensure good air circulation and prevent powdery mildew, especially in humid climates.

⏱️ Simple Growth Timeline

Days to Germination: 5 - 10 days (fast and consistent at 65°F-70°F).
Days to Transplant Size (4-6 leaves): 21 - 28 days (from sowing).
Days to First Bloom (From Direct Sow): 50 - 60 days (about 7-8 weeks).
Bloom Duration: Continuous from early summer to frost (approximately 12-16 weeks with regular deadheading).

Featured text

Menu

Cosmos Seeds - Pure White

Style: 300 Seeds

Quantity

Secure checkout with

📦Product Description

📝Quick Info Sheet

🌱How to Grow

📏 Planting Density

⏱️ Simple Growth Timeline

Company Info

Shop

General Support

Business Support

Search

Most Searched Keywords

My Cart

Your cart is empty.

Localization

Country/region - 2

Language - 2

Quick Add