How to grow walla onions: Walla Walla onions are mild enough sweet white onions to eat raw. The sets, which are small bulbs, ripen in about 56 days and yield a flat tan-skinned onion. Walla Walla onions planted from sets ripen before other kinds of onions and can be harvested when the sweet onion bulbs are full-grown and then the tops are finished..Plant the sets within the spring as soon because the soil has dried enough to not stick with your gardening tools.
Sterilize a second hand 12-inch deep container by washing it in soapy water and rinsing it with a mix of 1 part bleach to nine parts water. Air-dry the container therefore the soil doesn’t form mud round the edges. Mix together equal parts of potting soil and well-rotted compost. Fill the containers to within 3 inches of the rim.
2. Place the “Walla Walla” bulb sets on the soil 3 to six inches apart, counting on the specified size of the bulbs. Place the sets 1 inch apart if a number of the onions are planned for green onions. Sprinkle enough soil on top of the onion sets to hide the bulbs. Leave the ideas showing above the soil.
3. Move the onion container into a neighbourhood with a minimum of six hours of direct sunlight. If temperatures soar during a summer wave, move the container to a shaded spot in the late afternoon.
4. Water, whenever to top of the soil, begins to dry out. Onions have shallow roots, so don’t let the soil dry out, because the shortage of water creates smaller bulbs. Pour water into the highest of the container until it runs out rock bottom. Keep watering the onions throughout the season until the leaves begin to yellow and droop. Read more