High humidity will cause rapid decay. Crowns can become overheated if they are stored in a deep pile. Crowns in storage should be stacked only a foot or so deep. Avoid freezing temperatures in storage, since severe injury or even complete loss is probable. Each bud will eventually produce a spear.
Storage roots contain high levels of sugar that nurture the developing spears.
The larger the crown. A high-quality asparagus crown. Shallower planting depths cause production of spindly, thin spears, whereas deeply planted crowns produce fewer spears of larger diameter and emergence is delayed. Planting crowns closer than 12 inches results in reduced spear size and quality. Spacing crowns farther than 18 inches apart may result in larger spears but fewer spears per acre.