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An image of the plant grown with seed for Mammoth Basil Seeds - Ocimum Basilicum, Large Flavorful Leaves Ideal for Pesto & Sauces, Thrives in Filtered Light, Non-GMO
  • An image of the plant grown with seed for Mammoth Basil Seeds - Ocimum Basilicum, Large Flavorful Leaves Ideal for Pesto & Sauces, Thrives in Filtered Light, Non-GMO
Mammoth Basil Seeds - Ocimum Basilicum, Large Flavorful Leaves Ideal for Pesto & Sauces, Thrives in Filtered Light, Non-GMO
$3.99 CAD
Maturity

75 Days
Sunlight

Partial Sun
Watering

Regular

Difficulty

Easy to grow
Life cycle

Annual
Grow Zones

9 - 11

Quick Reference

Zones

Plant Hardiness Zones describe the average minimum winter temperature for a region. They tell you where a plant can reliably survive outdoors. For example, Zone 5 can handle colder winters than Zone 9. Matching a plant to your zone increases the chance of long-term success.

Days

  • For food crops: Days to maturity is the expected number of days from planting to first harvest. This helps gardeners plan their growing season and time their harvests.
  • For non-food plants: Days to germination indicates how long it usually takes seeds to sprout under normal conditions. This is key for starting seeds successfully.

Types

  • F1 (Hybrid): A cross between two parent varieties. Hybrids are bred for vigor, uniformity, and specific traits such as disease resistance. Seeds saved from F1 plants don’t grow true to type. That means if you try to regrow them from seed, the plant won't necessarily be the same as last year's
  • OP (Open-Pollinated): Varieties that naturally pollinate and remain stable across generations. Seeds can be saved and replanted with consistent results.
  • HM (Heirloom): An open-pollinated variety that has been handed down for many generations. Heirlooms are valued for flavor, tradition, and genetic diversity.

Grows

  • Outdoors: Well-suited for garden beds, raised beds, or open soil, where natural conditions are stable.
  • Windowsill: Compact plants that thrive in containers indoors, often needing only modest light.
  • Anywhere: Highly adaptable plants that perform reliably in both indoor and outdoor settings.

Lifecycle

  • Annual: Grows, flowers, sets seed, and dies in one growing season. Many vegetables and flowers are annuals.
  • Perennial: Lives for multiple years, regrowing each season after going dormant. Often used in landscaping or long-term food crops.
  • Sp. Perennial (Self-Perennializing): A plant that reseeds itself or self-pollinates, giving the effect of perennial growth even if individual plants live shorter lives.

Size

Indicates the recommended container size or soil depth for best growth.

  • “X″ Pot”: The ideal pot diameter (e.g., 5″ Pot), ensuring enough root space.
  • DS (Deep Soil): Requires planting directly in the ground or in a deep raised bed, as shallow pots restrict growth.
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  • Large Leaf Variety: Mammoth Basil features significantly larger leaves than traditional sweet basil, providing a robust and fuller flavor perfect for culinary uses.
  • Optimal Growing Conditions: Prefers filtered light, making it an excellent plant for indoor windowsill gardens; requires at least 5 hours of direct sunlight daily.
  • Germination and Spacing: Seeds sprout best at temperatures of 18-23°C (68-75°F), typically within 7-14 days; recommended garden spacing of 30 cm (12 inches) apart.
  • Versatile Culinary Uses: Ideal for creating rich, homemade pesto or enhancing sauces, salads, and sandwiches with its unique flavor and large leaves.
  • Soil Requirements: Thrives in light sandy soil enriched with peat-moss or leaf-mold and a moderate amount of fertilizer, ensuring robust growth.

Discover the exceptional taste and aroma of Mammoth Basil with our non-GMO seeds. This variety is renowned for its large, flavorful leaves, making it a favorite among chefs and home cooks. Perfect for creating rich, homemade pesto, enhancing sauces, or adding a gourmet touch to salads and sandwiches.

Mammoth Basil thrives in light sandy soil enriched with peat-moss or leaf-mold and requires at least 5 hours of direct sunlight daily. Ideal for indoor windowsill gardens, this basil grows well in filtered light, making it a versatile addition to any kitchen garden. Plant your seeds today and enjoy a bountiful harvest of fresh basil leaves!
Size
How much seed do I need?

Seeds per gram: 650
Average germination rate: 85%

Package sizes

  • Single Packet — 250 seeds — 212 plants — covers about 210–215 sq. ft.
  • 5 Grams — 3,250 seeds — 2,762 plants — covers about 2,700–2,800 sq. ft.
  • 25 Grams — 16,250 seeds — 13,812 plants — covers about 13,500–14,000 sq. ft.

Plant growth and coverage

  • Bushy, large-leaf habit suited to filtered light
  • Height: 45–60 cm (18–24 in)
  • Spread: 30–45 cm (12–18 in)
  • Spacing: 30 cm (12 in) between plants (about 1 sq. ft. per plant)

Choosing a packet size

  • Single Packet is ideal for home gardeners, containers, and windowsill or small raised-bed plantings.
  • 5 Grams suits small to medium gardens, succession sowings, and cooks planning generous batches of pesto.
  • 25 Grams is best for large beds, market growers, community gardens, or landscapers aiming for mass plantings.
GROWING INSTRUCTIONS

Start by sowing Mammoth Basil seeds indoors in light, sandy soil enriched with peat-moss or leaf-mold. Sow the seeds slightly below the surface and keep the soil moist. Maintain a temperature between 68-75°F (18-23°C) for optimal germination, which takes 7-14 days.

Once seedlings are established, gradually expose them to outdoor conditions to harden off before transplanting. Space the plants 12 inches apart to allow for their large leaves to fully develop. This basil variety thrives in filtered light but requires at least 5 hours of direct sunlight daily.

Water regularly to keep the soil moist but not waterlogged. Harvest leaves as needed, starting from the top to encourage bushier growth. Use fresh leaves in pesto, sauces, or as a flavorful addition to salads and sandwiches.
SHIPPING & RETURNS

In Canada, we use fast shipping from our Canadian warehouses. You can expect delivery in 1-3 days.

In the USA, We use our US warehouses, and you can expect your order in 1-3 days, too.

No postaged lettermail or slow shipping from across the world. No customs fees or orders withheld at the border. Tracking numbers for all orders.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Our return policy covers you for late, damaged or defective products.

 Read Our Shipping & Returns Policy

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