Delphinium2½' tall. Love the elegant charm of the giant delphiniums but can’t give them the space they require in your garden? Dwarf delphiniums have all the stately grace of the giants without all the fuss and falling over!
This mix offers sizeable cylindrical terminal flower spikes that rise above knee-high clumps of palmate glossy green foliage. Colors range from purple, blue, mauve, pink, lilac or cream. More tolerant to heat and humidity than many standard cultivars, yet the New Millenniums also thrive in super-chilly corners of the world with reports of successful perennial plantings in the frostier parts of Canada.
Avoid overhead watering to prevent disease. Mulch recommended to keep the roots cool and moist. Plant 36" apart in highly fertile non-acid loam. Light shade is best but full sun is fine. Z3. (3½" hardy plug stock)
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Herbaceous Perennial Plants
When you receive your order, open the bags and check the stock. Roots and crowns should be firm and pliable. If they are slightly dry, add a little water or, if they are going to be potted up soon, wet the roots. Generally, a little surface mold is harmless and will not affect the plant’s future performance. If you cannot pot them up immediately, store them in a cool (35–40°) location for a short time.
Do not plant bare-root perennial plant crowns directly outdoors.
Pot up the rootstock using well-drained potting mix in a deep 6" pot or a 1-gallon container. Avoid coiling the roots in under-sized containers. Grow newly potted perennials for a few weeks in a protected location in indirect light at 50–60°. Wet and/or cold conditions for an extended period may cause rotting. Transplant outside once they show some top growth and the danger of frost has passed.