Pak Choi Hotau F1 Seeds – Mini Heat-Tolerant Bok Choy Three-Season (Brassica rapa)

Most pak choi varieties have one weakness: heat. The moment summer arrives, they bolt — racing to flower before you can harvest. Hotau F1 (Brassica rapa subsp. chinensis) was bred to break that rule. Named for the Japanese word for “firefly,” it is the pak choi that lights up the gap in your garden calendar — the weeks and months when every other bok choy has given up.

Plant it in spring. Plant it in summer. Plant it again in fall. Hotau delivers every time.

The Summer Pak Choi

This is Hotau’s defining characteristic and its greatest advantage: genuine heat tolerance and slow bolting that extends the harvest window deep into the warm season. While Tall White Stem and Purple Gem pak choi are strictly cool-season crops, Hotau bridges the gap — performing reliably in late spring and summer plantings that would cause other varieties to bolt immediately. For gardeners who want pak choi on the table from spring through fall without interruption, Hotau is the missing piece.

Mini Restaurant-Style Form

At just 7–10 cm (3–4 inches), Hotau produces compact, wide, squat rosette heads with broad, substantial petioles — thick, spoon-shaped leaf stems that hold their structure beautifully through cooking. This is the premium mini bok choy form you see halved and plated in high-end Asian restaurants: every head identical in size and shape, the wide petioles caramelizing perfectly when seared cut-side down in a screaming-hot pan. F1 uniformity means every head in your planting matures at the same size — no sorting, no waste.

Why Hotau F1?

• Three-season versatility: Spring, summer, and fall — the only pak choi in the lineup that performs reliably through the warm season
• Heat-tolerant & slow-bolting: Bred specifically for extended bolt resistance in warm conditions — the critical advantage over standard pak choi types
• Fast-growing: Quick days to maturity — succession sow every 2–3 weeks for a continuous supply across all three seasons
• Premium mini form: 7–10 cm (3–4 in) wide, squat rosette with broad substantial petioles — restaurant-quality presentation in the home garden
• F1 uniformity: Every head identical in size and maturity — ideal for planned harvests and succession plantings
• Completes the trio: Pairs perfectly with Tall White Stem F1 (classic full-size, spring/fall) and Purple Gem F1 (anthocyanin-rich, fall premier) for year-round pak choi from a single garden

In the Kitchen

• Seared & caramelized: The hero preparation — halve heads lengthwise, place cut-side down in a screaming-hot cast iron or carbon steel pan with oil; sear without moving until deeply caramelized; finish with garlic, oyster sauce, and a splash of water to steam through
• Stir-fry: Halved or quartered; add to wok in the final 2 minutes of cooking — wide petioles hold texture beautifully at high heat
• Steamed whole: Steam entire heads until just tender; finish with hot garlic oil and soy sauce for a classic Cantonese preparation
• Braised: Whole heads braised in chicken broth with ginger and Shaoxing wine — the compact size means they hold together perfectly
• Grilled: Halved, brushed with miso butter or sesame oil, grilled over high heat — charred edges, tender core, stunning presentation
• Soup: Drop whole heads into ramen, miso, or pho in the final minute — the uniform mini size makes for a beautiful bowl

Growing Notes

• Type: F1 hybrid; warm and cool-season annual — seeds will not breed true
• Seasons: Spring, summer, and fall — three-season production
• Germination: 4–7 days at 60–75°F
• Spring sowing: Direct sow or transplant from 2–3 weeks before last frost through late spring
• Summer sowing: Direct sow through summer — heat tolerance allows planting when other pak choi varieties cannot be grown
• Fall sowing: Direct sow 6–8 weeks before first fall frost
• Succession sowing: Every 2–3 weeks across all three seasons for continuous harvest
• Light: Full sun to part shade; part shade helps in peak summer heat
• Spacing: 15–20 cm (6–8 in) for full mini heads; closer for baby harvest
• Watering: Consistent moisture; mulch in summer to retain soil moisture and moderate soil temperature
• Pest management: Row cover recommended for flea beetle and cabbage worm protection, especially in spring