- Name: Yellow Crimson Watermelon - Scientific Name: Citrullus Lanatus - Color: Yellow Flesh / Striped Green Skin - Plant Seeds: At 75 - 85f - Harvest: 80 Days - Hardiness Zone: Annual - Plant Height: 6 - 12" - Plant Spacing: 5 - 6' - Light Requirements: Sun - Soil & Water Preferences: Average - Dry - Quantity: 50 Seeds - Other: The Yellow Crimson Watermelon Is An Heirloom With Lovely Yellow Flesh! They Get The Misleading “Crimson” In Their Name Because They Are Similar To The Crimson Sweet Watermelon – Sweet & Juicy. Yellow Crimson Watermelons Are Oblong In Shape, & Weigh 10 - 15 Pounds. Pair ‘Yellow Crimson’ With The Orange Fleshed ‘Tendersweet Orange’ & A Regular Red Watermelon For A Fun Colorful Watermelon Salad!