Jerusalem Artichoke, Sunchoke, "White Mammoth" variety | Helianthus tuberosus

🌿 Ships well rooted in a 3.5 x 5 inch deep pot. 

The White Mammoth Jerusalem Artichoke earns its name — this is the big-yield, big-tuber cultivar that delivers where others disappoint. Where other sunchokes produce clusters of small, knobby tubers that test your patience in the kitchen, White Mammoth throws large, chunky, smooth-skinned tubers that are as easy to harvest as potatoes and nearly as versatile to cook. The plants themselves are vigorous and towering, topped in late summer with a flush of golden sunflower blooms that light up the back of a border or garden edge and draw every native bee in the neighborhood. Plant it once in a sunny spot with decent drainage, and you will be harvesting for years.

Latin Name: Helianthus tuberosus 'White Mammoth'
Site and Soil: Full sun preferred, tolerates part shade; thrives in most kinds of soils
Pollination Requirements: Self-fertile; an excellent late-season pollinator magnet when most other blooms have faded
Size at Maturity: 7–12' h x 2–3' w (best sited at the back of beds, along fencelines, or as a productive windbreak or privacy screen)
Harvest Time: Fall through winter; flavor and sweetness improve markedly after first frost — tubers can be left in the ground and dug as needed through the cool season
Pests & Diseases: no meaningful pest or disease pressure
USDA Zone: 3–9 (reliably perennial throughout Georgia; tops die back hard after frost and return with vigor each spring)

A Note on Spread: White Mammoth is a vigorous spreader — each year the planting will expand as unharvested tubers send up new shoots. This is a feature if you want a productive, self-sustaining patch, but if you're working with a defined bed or smaller garden space, plan to harvest thoroughly each fall or install a simple rhizome barrier at planting to keep it where you want it.