Italian Large Leaf Basil (Ocimum basilicum) is a classic heirloom basil variety known for its lush, vigorous growth and oversized aromatic foliage. This non-GMO annual thrives in warm, sunny gardens and is ideal for raised beds, patio planters, cottage gardens, borders, and sensory herb plantings. With its pollinator-attracting blooms and strong summer performance, this basil is a versatile choice for gardeners seeking both ornamental and practical garden value.
Features
- Large aromatic leaves on a vigorous heirloom plant
- Non-GMO Ocimum basilicum variety
- Excellent for warm-season beds, borders, and containers
- Easily shaped by light pruning for full, leafy growth
- White flowers attract bees and garden pollinators
- Productive and fast-growing throughout summer
Specifications
- Common Name: Italian Large Leaf Basil
- Scientific Name: Ocimum basilicum
- Plant Type: Annual
- USDA Zones: 4–11 (grown as a warm-season annual)
- Season: Late spring through summer
- Height: 18–30 inches
- Foliage: Large, aromatic green leaves
- Bloom Color: White if allowed to flower
- Heirloom: Yes
- GMO Status: Non-GMO
- Organic: Not certified organic
- Light Requirements: Full sun
- Soil Preference: Rich, well-drained garden soil
- Water Needs: Moderate, consistent moisture
- Growth Rate: Fast
- Days to Maturity: 60–75 days
- Heat Tolerance: High once established
- Cold Tolerance: Low; frost sensitive
- Plant Spacing: 12–14 inches
- Seed Longevity: 3–5 years when stored cool and dry
Planting Guide
- Sowing Method: Start indoors or direct sow outdoors after frost.
- Seed Preparation: No soaking or stratification needed.
- When to Plant:
- Indoors: 4–6 weeks before last frost
- Outdoors: After soil warms and frost risk is gone
- Sowing Depth: Press lightly into soil and cover 1/8 inch deep.
- Germination Time: 5–10 days in warm temperatures.
- Light Requirements: Full sun for broad, vigorous growth.
- Soil Conditions: Use loose, well-draining soil with organic matter.
- Watering: Keep moist during germination; water moderately after.
- Maintenance:
- Pinch new tips for bushier growth
- Remove early flowers to maximize leafy production
- Avoid overwatering, especially in containers