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Tomato Seeds, Principe Borghese
Description
(Solanum lycopersicum). Famous for sun drying. Small 1-to 2-ounce, grape-shaped fruit is very dry and has few seeds. It has a rich tomato taste that is wonderful for sauces. Vines yield clusters of fruit in abundance, perfect for selling in fresh markets and making specialty products. We offer pure Italian seed.
- Determinate
- 70-75 days to maturity
- 6-8 hours of full sun
- Sprouts in 7-14 days
- Seed Depth: 1/8"
- Plant Spacing: 24"
- Ideal Temperature: 75-95 F
- Frost Hardy: No
Growing Tips, Tricks and FAQs
Growing Tips
The Principe Borghese tomato grows best in full sun and well-draining, rich soil, producing a heavy crop in a short period. In cooler climates, you can use a heat mat to help warm the soil and speed up germination.
When to Grow
Start seeds indoors 6-10 weeks before the last expected frost date. Transplant them outdoors after all danger of frost has passed and daytime temperatures consistently exceed 60 F. In warm climates, you can direct sow seeds after the frost has cleared​.
How to Sow and Plant
Sow seeds 1/8 inch deep in seed-starting mix. Once seedlings reach 4-6 inches, transplant them to a sunny location, spacing plants about 24 inches apart. Amend the planting area with compost or well-rotted manure before transplanting​.
How to Grow
These tomatoes need 6-8 hours of sunlight daily. Water consistently to keep the soil moist but not waterlogged, and use mulch to retain moisture and prevent weeds. As determinate plants, they don’t require as much staking as vining varieties, but light support can be beneficial due to their fruit load. Fertilize every 2-3 weeks with a balanced vegetable fertilizer to support vigorous growth​.
How to Save
- Most tomatoes are self-pollinating and don't frequently cross; in a garden setting, separating by 25 feet should prevent 99% of cross-pollination. Or you can bag and hand pollinate for 100% purity.
- On a small scale, seeds may be scooped from the fruits and dried on a paper towel.
- For larger quantities or cleaner seeds, fermentation for a few days is recommended.
- Once dry, tomato seed can be stored in a cool, dry, dark place; good seed retains viability for 5 years or more.
FAQ
What makes Principe Borghese tomatoes great for sun-drying?
These tomatoes are dense and low in moisture, which enhances their flavor when dried. They retain a rich, intense taste ideal for sauces and winter storage​.
Can Principe Borghese tomatoes grow in containers?
Yes, they are well-suited for container growing. Choose a container that is at least 12 inches deep with good drainage and place it in full sun for optimal growth​.
What are common diseases affecting Principe Borghese tomatoes?
They can be susceptible to blight and blossom end rot. Ensure even watering and mulch to retain soil moisture. Crop rotation and avoiding overhead watering can also help prevent fungal issues.
More Questions?
Check out our "Tomatoes 101" blog post by staff horticulturist John Lenz.
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