Pacific Giant Black Knight
Delphinium Seeds
Pacific Giant Black Knight delphinium flowers are a gorgeous dark violet-purple. Black Knight is the darkest-colored delphinium in the Pacific Giant series.
Huge 3 in. double summer flowers are excellent for cutting. When first flower spike is removed immediately after bloom, additional spikes quickly form. Plants grow 4-7 ft. tall, need staking to protect heavy flower spikes from the wind. The palmate-shaped leaves are large.
Pacific Giant Black Knight delphinium is a dramatic plant for the cottage garden or the back of borders. Winter hardy to zone 3.
Growing Pacific Giant Black Knight Delphinium Seeds
Plant Delphiniums Seeds: Sow seeds in cell packs or flats, press into soil and lightly cover. Kept at 55°F., germination is in 14-35 days.
Grow Delphiniums: The germination rate of delphinium seed can be improved (if prior to sowing) the seeds are placed in a ziplock bag with a small amount of moist growing media (or a moist paper towel) and kept in a refrigerator for 2 weeks.
U.S. Shipping Rates
Free shipping on U.S. orders over $70.00.
Free priority shipping on U.S. orders over $200.00.
Standard U.S. shipping is $7.99.
Priority U.S. shipping is $11.99.
International Shipping Rates
Shipping to Canada is $17.99.
International shipping to all other countries is $19.99.
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 replacements or issue a refund.