Shimonita Negi Bunching Onion Seeds

Shimonita Negi XL Bunching Onion Seeds - Japanese Scallion/Spring Onions Heirloom Vegetable Seeds
Allium fistulosum
Listing is for 1 packet of minimum 30 seeds

Grow the Shimonita Negi, a rare and highly prized Japanese bunching onion known for its thick, juicy stalks and sweet, umami-rich flavor. Unlike typical green onions, Shimonita Negi develops a creamy, tender texture that’s perfect for grilling, stir-frying, and adding to soups. This cold-hardy and easy-to-grow variety thrives in cooler weather and is a staple in Japanese cuisine, often used in sukiyaki, miso soup, and tempura. Stalks get very big, almost like a mini leek. Hill up the soil to "blanch" the stalks just like you do when growing leeks to develope a longer white stalk portion. 

Ideal Growing Conditions

Sun: 8 hours of full sun

Water: Let the soil dry out a little in-between watering

Fertilizer: Regular applications of an organic granular fertilizer, like Espoma Garden-Tone, or blood meal, will help promote lush leaf growth.

Blanching: This variety of bunching onion produces thick stalks that benefit from “blanching”. Hill up soil around the base of the stalks to prevent light from hitting the bottom portion of the stalk. This will keep more of the stalk white and tender.

When & How To Sow Seeds: Bunching onions grow well during the majority of the year. They tolerate a wide range of conditions and temperatures, from hot to cold. Start seeds 3 months in advance of whatever your target date is for transplanting them into the garden. Sow onion seeds in 72 cell seed trays, 10x20 flats, or densely in 4 inch pots, and pull them apart when it's time to transplant. Transplant when seedlings are 4-5 inches tall. Space them 3 inches apart or mix them throughout your garden and veggie crops to deter pests. Can also direct sow seeds but just need to make sure the soil stays moist or they will not germinate well. 

Please watch my YouTube video on how to sow onion seeds for complete instructions: https://youtu.be/g35dF8aVDhw

Germination: 7-21 days Onions are slow to germinate

Days To Maturity: 80 days after transplanting

How & When To Harvest: Can harvest the greens at any time. Harvest a few green leaves at a time instead of pulling out the whole stalk so it will continue growing/producing. Then pull out whole stalks at the end of the season.

Common Diseases: The most common disease when growing bunching onions is downy mildew. This fungal disease thrives in cool, damp conditions, causing pale green or yellow patches on leaves that progress to grayish-purple mold, eventually leading to leaf dieback and reduced growth. Avoid overhead watering and ensure proper spacing for good air circulation. Spray with 1 cup of hydrogen peroxide, which will kill the fungus, clean, and disinfect the leaves. 

Common Pests: The most common pests on bunching onions are onion thrips and onion leaf miners. Thrips are tiny insects that feed on sap, causing silvery streaks and stunted growth, while leaf miners are flies whose larvae burrow into leaves, creating damaging tunnels. Treat thrips with an organic insecticidal soap or spinosad.  Leaf miners for the most part is just cosmetic damage, and are actually not so bad that it affects the plants. You can remove leaves that have their signature white trail markings if you would like.  

Do I have a YouTube video tutorial on how to grow this? Not yet

Additional Tips/Information: N/A