Onion 'Walla Walla'
Onion 'Walla Walla' is a supremely sweet and mild heirloom onion cultivar, famous for its large, globe-shaped, pale yellow bulbs that can be eaten raw without harshness. This maincrop variety is a favourite for those seeking a less pungent onion. Plants typically grow to about 40-50cm in height. It thrives in a sunny, open site with firm, fertile, well-drained soil. 'Walla Walla' is best sown in autumn in mild UK areas or early spring for harvest in mid-summer. While its exceptional sweetness means it doesn't store as long as some other varieties, its delicious flavour makes it a highly desirable fresh onion.
Sun: Full sun.
Soil: Firm, fertile, well-drained soil.
Hardiness: H4 — down to −10°C.
Flowering: Jun, Jul.