keeps In Good Conditionwinter-tolerantf 1 Hybrid Vigourif You Like A Spring Onion Which Packs A Punch Guardsman Spring Onion Sets The Standard for A strong Spring Onion Variety. guardsman Holds In Good Condition Longer Than Traditional White Lisbon.salad Onion Guardsman Is An Improved f 1 Hybrid White Lisbon/japanese Cross Which Means It Is Reliably Vigorous To Give Handsome Harvests Of Medium Green Foliage On tall & Erect Plants. Great To Taste & Structural For A Good-looking Vegetable Plot.guardsman Is reassuringly Resistant To Bulbing & Botrytis For Unblemished Pencil-like salad Onions With A Pleasant Kick To Add Zing To Your Salads Through Summer & Autumn.