Botanical Name: Solanum melongena
Days to Maturity: 70–80 days from transplanting
Hardiness: Perennial in tropical climates; grown as annual in climates other than those that are frost-free and very warm; very frost sensitive.
Plant Dimensions: 24"–36" tall, 24" wide
Variety Information: 8"–10" long, 2" wide; cylindrical, but slightly wider at bottom end, with smooth, glossy purple skin, and creamy interior.
Attributes: Good for Containers
When to Sow Outside: 2 to 4 weeks after your average last frost date, when soil temperature is at least 70°F, ideally 80°–90°F, and when outside night air temperature is above 60°F.
When to Start Inside: RECOMMENDED. 10 to 12 weeks before your average last frost date. Transplant outdoors 1 to 2 weeks after last frost, when soil temperature is at least 60°F, and outside night air temperature is above 60°F.
Days to Emerge: 10–20 days
Seed Depth: ¼"
Seed Spacing: Start indoors
Row Spacing: 36"
Thinning: Start indoors; plant 18" apart outside
Harvesting: 'Long Purple' should be harvested when the fruit is no longer than 10" and the skin is still shiny; can be harvested at baby size. If you are in doubt about maturity level, note that it's better to harvest eggplants a little young rather than wait until they are overly mature with dull skin, eventually possibly turning a golden color, with plentiful seeds, and bitter taste. To harvest, cut the stem with pruners. Plants will produce four or more fruits. Continual harvest will encourage more production.