Plug Connection
Delphinium Guardian
Although best planted in the fall for hot climate growers, moderate and cool climate folks can plant in spring in summer for first year flowering. Very uniform in its bloom time makes for easier harvesting and marketing. The florets are closely spaced giving a full appearance. Strong and vigorous. A favorite of a number of seasoned flower farmers. Bred by PanAmerican Seed.
**We do not guarantee any specific shades will appear in Mix products, as the Mix is created by the seed breeder. It is possible that Mix will be all one color, or significantly different from pictured colors. If you need specific shades, please order straight colors as opposed to Mix trays.**
Grown in a 288 cell tray, billed as 285
Grown in a 128 cell tray, billed as 125
Order 8 or more weeks in advance of desired ship date.
Photos from PanAmerican Seed
Learn More: Delphinium Growing Guide
Order Minimums & Tray Sizes
The minimum Plug Connection order is four total trays (each tray can be a different variety)
A full shipping box contains FOUR 128 cell trays or a combination of 128 and 288 cell trays.
*If you are only ordering 288 cell trays, then FIVE trays will fill a box.
Growing Guides
Click here to access our comprehensive growing guides containing everything you need to know about this crop.
| Common Name | Delphinium |
| Genus | Delphinium |
| Species |
|
| Family |
Ranunculaceae
|
| Life Cycle |
Perennial, often treated as biennial in warm climates.
|
| Format | Plugs |
| Plug Care |
Transplant within 2 weeks of arrival or bump up into a larger cell until you can transplant.
|
| Netting / Staking |
Varies by location. Delphinium will need staking if grown in high wind and/or heavy rain locations.
|
| Temperature Range |
-35 to 75F
|
| Spacing |
6-12". 18" in cool summer locations.
|
| Soil Preference |
Fertile, moisture retentive soil.
|
| Day Length |
Facultative long day.
|
| Pinching | No |
| When to Plant |
In hot summer locations, plant 2-4 weeks before first frost for bloom the following spring. Can also be planted in a cool greenhouse in winter for spring flower, as you would grow snapdragons. In cool summer locations, plant any time and establish as a true perennial.
|
| Harvesting |
Harvest when 1/3 of florets are open. Cut to the ground to encourage regrowth.
|
| Post Harvest Care |
Use a holding solution. Delphinium is highly sensitive to ethylene and treatment should be considered.
|
| Diseases / Insects |
Powdery mildew should be managed at first sign of infection. Belladonna types seem to be more susceptible to mildew. Broad mites and cylclamen mites can cause puckering of the foliage and distortion of the flowers. Manage with predatory mites.
|
| Bailey's Notes |
The only thing to know is that Delphinium hate heat. If you live in a hot summer location, you need to plant in the fall or late winter and grow them like a hardy annual. In locations with cool summers they become long lived perennials. Cut back to the ground when you harvest and they will often regrow and rebloom. When established as long-lived perennials, thin the new growth to 3-5 shoots per plant to produce better quality flowers.
|
| Resources | National Garden Bureau Delphiniums, a perennial favorite |