Turnip, Purple Top White Globe HEIRLOOM. A timeless variety,ancient yet still tops with turnip lovers HEIRLOOM. A timeless variety, ancient yet still 'tops' with turnip lovers who prize its deliciously sweet and tender white roots. The turnips are often 4" and sometimes 6" across, handsomely blushed with pink to purple at the crown. Young leaves make the classic cooked 'southern greens'.