All three of these delectable sweet peppers start out green and then sweeten as they transform into their ripe color, although delicious at any stage. Heirloom 'Yolo Wonder' (red color seeds) turns bright red and is resistant to tobacco mosaic virus. 'Coral Belle' (natural color seeds) turns intense orange, and 'Canary Belle' (yellow color seeds) turns a brilliant yellow. These 3½"–4" hefty peppers grow well in containers too.

Days to Maturity: 68–85 Days from transplanting

Family: Solanaceae

Type: Sweet Pepper

Native: Americas

Hardiness: Perennial grown as an annual; very frost sensitive.

Exposure: Full sun

Plant Dimensions: Yolo Wonder': 24"–36" tall, 12"–18" wide. 'Coral Belle'; 18" tall, 12"–15" wide. 'Canary Belle'; 15"–24" tall, 12"–18" wide.

Variety Info: YOLO WONDER': 3½"–4" wide, 4"–4½" long, blocky shape, thick flesh. Immature green peppers are commonly called "green bell peppers". If left on the plant to mature, they turn sweeter and a rich red, commonly referred to as "red bell peppers". Moderately resistant to tobacco mosaic virus. 'CORAL BELLE': 3½" wide, 4" long, turning from green to orange ("orange bell pepper") and sweeter when mature. 'CANARY BELLE': 3"–3½" wide and long, turning from green to yellow ("yellow bell pepper") and sweeter when mature.

Attributes: Frost Sensitive, Good for Containers

When to Sow Outside: For mild climates only: 2 to 4 weeks after your average last frost date, when soil temperature is at least 70°F.

When to Start Inside: RECOMMENDED. 8 to 10 weeks before transplanting. Ideal soil temperature for germination is 70°–90°F. Transplant seedlings outside 2 to 4 weeks after your average last frost date, and when daytime temperatures are at least 70°F, and nighttime temperatures are at least 55°F. Mild Climates: Can also sow in late summer for fall/winter crop.

Days to Emerge: 10 – 25 Days

Seed Depth: ¼"

Seed Spacing: Start indoors

Row Spacing: 24" – 36"

Thinning: Start indoors, plant seedlings 18" – 24" apart outside