Alto Leek
Best choice for gardeners seeking a fast-growing, versatile summer harvest.
Discover the Alto Leek, a popular, fast-growing variety ideal for early summer harvests. This tall Bulgarian-type yields cylindrical shapes featuring thick, white shafts. It offers consistent performance for summer production, allowing you to harvest early for delicate bunching leeks or allow full maturity for robust flavor. For best results, plant in well-drained, fertile soil with a pH between 6.2-6.8. To achieve longer, blanched stalks, remember to hill soil around the plants twice during the summer. These are organically precision primed seeds.
$4.15
Owner Satisfaction
4.7
/ 5
Category Rank
270
/ 5876
#270 in Seeds & Seed Tape
Price vs Category Average
-61%
Below average
Is Organic
true
/ true
Who it's for
- Gardeners in cooler climates seeking extended harvest windows
- Market growers prioritizing consistent, professional-grade vegetable appearance
- Organic farmers committed to sustainable and chemical-free cultivation
Who should skip it
- Impatient gardeners with limited space for long-term crops
- Low-maintenance gardeners looking for hands-off vegetable varieties
- Beginners wanting to avoid active pest management routines
Performance breakdown
Growth Velocity
Rapid maturity cycle makes this a standout for early summer harvests.
Germination Reliability
Precision priming ensures consistent, uniform emergence across the seed bed.
Harvest Versatility
Adaptable for both delicate bunching and full-sized, robust culinary use.
Structural Integrity
Produces sturdy, cylindrical shafts that hold up well during hilling.
Cultivation Ease
Requires standard hilling techniques to achieve optimal white stalk length.
Organic Quality
Certified organic standards provide peace of mind for home vegetable growers.
Key Specs
Is Organic
true
Days to Maturity
75 days
Planting Season
Spring
Seed Form
Loose Seeds
Variety Type
Open-Pollinated
Seed Count
10250
Water Needs
Moderate
Plant Type
Vegetable
Features
- Popular, fast-growing summer leek
- Produces cylindrical shape and thick shaft
- Tall Bulgarian-type variety
- Consistent summer production performance
- Organically precision primed seed
- Versatile for bunching or full maturity
- Suitable for spring planting
- Moderate water needs
What customers say
Customers overwhelmingly favor the Alto Leek seeds for their exceptional reliability and premium quality. A key highlight is the near perfect germination, ensuring vigorous starts and minimizing effort. Gardeners consistently praise the impressive growth habit, which produces long, beautifully blanched shanks, maximizing usable yield. The flavor is described as mild, sweet, and superior to standard store varieties, making it a culinary favorite. This variety also shows excellent cold hardiness for extended harvesting. While the initial cost is noted, the high yield and consistent quality strongly justify the investment, delivering robust perceived value for both home and market growers.
Know before you buy
Harvesting early yields delicate, tender stalks perfect for bunching, while waiting for full maturity results in a more robust, intense flavor. You can begin harvesting as soon as the plants reach your desired size, typically starting around 75 days.
To achieve the signature white shaft, you need to hill soil up around the base of the stems twice during the growing season. This process blocks sunlight from the lower portion of the plant, preventing it from turning green and tough.
Precision priming is a process that prepares the seeds to germinate more uniformly and quickly under a wider range of soil temperatures. This helps ensure a more consistent crop and better success rates for your summer harvest.
While Alto Leeks are suitable for spring planting, they are typically started indoors or in a greenhouse to give them a head start before transplanting. If you choose to direct sow, ensure your soil is well-drained and fertile, and follow the recommended seeding depth of 1/4 inch.
For optimal growth, thin your seedlings to 6 inches apart within the row. Maintain a row spacing of 24 inches to ensure adequate airflow and room for the hilling process.
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$4