Rich dark-blue flower spikes.
Giant Imperial Blue Spire larkspur are upright-growing plants with finely-cut, feathery foliage. Tall, dark blue spikes of densely-set, 1-1½ in., double blooms appear in spring and early summer. Flowers are excellent in fresh cut or dried arrangements. Giant Imperial Blue Spire larkspur grow 3-5 ft. tall, look terrific at the back of borders, or along fence lines and walls.
Growing Blue Spire Larkspur Seeds
Spread larkspur seed on an evenly moist paper towel, fold and put inside a zip-lock bag and place in the refrigerator for 2 weeks. Remove, and immediately sow seeds in rows in prepared seed beds, cover lightly. Thin seedlings to 10-18 in. apart. Sow larkspur from fall to early spring. Seeds can be started in small, individual containers provided seedlings are not allowed to become root bound. Transplant with care. Larkspur seeds are easy to germinate in cool (55° F. or below) soil.
U.S. Shipping Rates
Free shipping on U.S. orders over $60.00.
Free priority shipping on U.S. orders over $125.00.
Standard U.S. shipping is $5.99.
Priority U.S. shipping is $9.99.
International Shipping Rates
Shipping to Canada is $9.99.
International shipping to all other countries is $14.99.
We guarantee all the seeds we sell for one full year from the date of purchase. If you are unsatisfied with any seeds purchased from Swallowtail Garden Seeds, we will issue a refund. For customers in the U.S., we can send one-time replacement packets or issue a refund.