Harris Seeds Lettuce Jara Seed
Best heat tolerant variety for organic summer vegetable gardens.
A resilient romaine variety engineered to withstand challenging growing conditions. It excels in summer heat by resisting bolting while maintaining dense, high-quality hearts.
$2.30
at
Harris Seeds
More Jara Lettuce options
Who it's for
- Gardeners in warmer climates seeking reliable summer harvests
- Eco-conscious growers prioritizing sustainable and organic gardening practices
- Salad enthusiasts who appreciate a balance of crunch and taste
Who should skip it
- Beginners planting in peak summer without temperature-controlled environments
- Casual hobbyists looking for a low-maintenance crop
- Traditionalists wanting a classic, dense supermarket-style lettuce head
Performance breakdown
Heat Tolerance
Exceptional resistance to bolting keeps leaves sweet during peak summer heat.
Disease Resilience
Comprehensive protection against mildew and viruses ensures a healthy, reliable crop.
Harvest Quality
Consistently produces dense, high-quality hearts that rival professional market standards.
Growth Reliability
Engineered to thrive even when environmental conditions are less than ideal.
Pest Defense
Built-in aphid resistance significantly reduces the need for manual pest management.
Ease of Cultivation
Straightforward direct sowing requirements make this accessible for novice home gardeners.
Key Specs
Plant Type
Lettuce
Days to Maturity
55 days
Disease Resistant
Yes (Downy Mildew, Fusarium Wilt, Lettuce Leaf Aphid, Tomato Bushy Stunt Virus)
Pest Resistant
Yes (Lettuce Leaf Aphid)
Planting Method
Direct Sow
Soil Temperature
60-65°F
Germination Days
6-10 days
Seeding Depth
0.125-0.25 inches
Spacing in Row
8-14 inches
Spacing Between Rows
1-2 feet
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