Basil Seeds - Treviso AAS
90 days. Ocimum basilicum. Basil Treviso AAS. Non-GMO, annual, Italian Genovese-type basil, All-America Selections National Winner. This crop is suitable for garden plots, raised beds, and containers. Treviso is a compact, tightly mounded, highly branched basil with bright green, sweet, slightly anise-scented leaves that stay tender and resist bitterness. Bred for vigor, heat tolerance, and resistance to downy and powdery mildews, it is slow-flowering, perfect for fresh pesto and all-season harvests. ~16,000 seeds/oz.
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Growing Basil Treviso in the Herb Garden
Basil Treviso thrives in warm, sunny conditions. For an early start, sow seeds indoors 5-7 weeks before your last frost. Press seed into moist mix and cover very lightly, keeping at 65-75 F with bright light. Transplant outdoors once nights have warmed, and all danger of frost has passed, spacing plants 8-12 inches apart in rows 12-18 inches.
For direct sowing, plant after the soil has warmed, like you would for tomatoes or summer squash. Sow 0.125-0.25 inch deep and thin to one vigorous seedling every 8-12 inches. Water regularly, but avoid soggy soil. A light mulch helps keep roots cool and moisture even in containers and raised beds. Avoid excess nitrogen, which can make growth lush but dilute flavor.
Harvesting of Basil Treviso
Begin harvesting when plants are well established and 6-8 inches tall. Pinch out the growing tips above each leaf pair to encourage branching, then continue harvesting stems and leaves regularly. Treviso's short internodes and highly branched habit give many harvest points on each plant.
Thanks to its heat tolerance and slow-to-flower nature, Treviso holds leaf quality and flavor later into the season than many basil varieties. Leaves resist oxidation and bitterness after harvest, making them ideal for bright green, sweet pesto. Harvest in the cool of morning and use promptly for peak aroma, or loosely store unwashed stems in water at room temperature for short-term holding.
About Basil Treviso AAS Garden Seeds
Basil Treviso is a 2026 All-America Selections Edible - Vegetable Winner and National Winner, bred by GardenGenetics and Seeds by Design. In trials across North America, it impressed judges with its compact, mounded habit, dense branching, and excellent performance in containers and small-space gardens.
The slightly anise-scented leaves stay tender and flavorful, even in summer heat, with demonstrably reduced oxidation and bitterness after harvest. Combined with downy and powdery mildew tolerance and a notably slow-to-flower habit, Treviso offers a long harvest window of top-quality leaves—an outstanding choice for gardeners who want a reliable, premium pesto basil.
Tips From Our Gardeners
"Wait for truly warm soil before sowing basil, then pinch often. With Treviso, think 'cut and come again'—harvest stem tips regularly, keep plants in full sun with steady moisture, and you'll enjoy a long season of bright green, fragrant leaves for pesto and fresh dishes."
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- Jerry Sawyer, True Leaf Market Writer |
Basil Treviso AAS Seeds Per Package:
- 2 g Packet - Packet - Approximately 1,100 Seeds
- 1 oz - Bulk - Approximately 16,000 Seeds
- 4 oz - Wholesale - Approximately 64,000 Seeds
Non-GMO Basil Treviso AAS seeds are available for Fast Free Shipping on qualifying orders.
Basic Info
| Latin Name: | Ocimum basilicum |
| Treviso Basil Leaf Color: | Bright, glossy green leaves that resist oxidation and stay attractive in the bowl and blender |
| Treviso Basil Flavor: | Classic sweet basil with a slightly anise note, strong fragrance, and leaves that stay tender and non-bitter longer after harvest |
Growing Info
| Hardiness Zone: | Annual 4, 5, 6, 7, 8, 9, 10, 11 |
| Days to Maturity: | 90 days from sowing; about 60 days from transplant for full-size harvest |
| Days to Germination: | 7-14 days |
| Seeding Depth: | 0.125-0.25 inch; sow shallow and barely cover seed |
| Plant Spacing: | 8-12 inches |
| Row Spacing: | 12-18 inches |
| Plant Height: | 15-24 inches |
| Growth Habit: | Mounded, compact, short-internode plants with dense branching |
| Soil Preference: | Fertile, well-drained loam enriched with compost; avoid waterlogged or heavy clay; pH 6.0-7.5. |
| Temperature Preference: | Warmer 70-85 F |
| Light Preference: | Full Sun |
Other
| Direct Sow: | Yes, after soil has warmed in late spring; sow when you would plant tomatoes or summer squash. |
| Start Indoors: | Yes, 5-7 weeks before transplanting; grow warm with medium to bright light. |
| Plant Width: | 12-14 inches |
| Deer Resistant: | Moderately deer resistant; may need protection where browsing pressure is high. |
| Germination Temperature: | 65-75 F |
| Pests and Diseases: | Treviso shows tolerance to downy mildew and powdery mildew and has shown reduced Japanese beetle damage in trials; still monitor for aphids, leaf miners, and other chewing insects. Provide airflow and avoid overhead watering to limit foliar disease. |
| Primary Uses: | Fresh pesto, caprese, salads, pizza, pasta, herb butters, and garnishes |
| Garden Size: | Garden Plot, Raised Bed, Containers, Patio Planters |
| Climate Tolerance: | Warm-season, heat tolerant, slow to flower; not frost tolerant |