About Delphinium Summer Nights
These delphiniums are known for their shorter growth habit with mounds of blossoms held a short way above the foliage. Prolific blooms through the season making them an excellent choice for the front of the border or mixed in pots. Delphinium Summer Nights are the best type of delphinium for the warmer zones. Ours bloomed all summer long. The midnight blue is a perfect color.
Delphinium Summer Nights
Planting and Growing Delphiniums
Make sure your Delphiniums “harden off” to cool nights and windy conditions before planting. This requires leaving them outside in a protected area for a few days otherwise, they may wilt after planting. Choose an area in full sun or part shade, with well-drained soil. Prepare your planting hole by turning the soil at least a shovel size deep and wide and be sure the hole is filled with plenty of organic matter. Remove your plant from its pack and gently loosen the root ball. Plant deep enough to cover the top of the root ball. Press down firmly on the soil and then you can water it in. You can mulch if you like but keep it away from the stem to avoid rot. Consider fertilizing once or twice a season as delphiniums are heavy feeders. Stake if needed. Clip spent blooms 6-8” from the soil and you are likely to get a second flush of flowers!