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Delphinium Guardian Blue

Delphinium, Delphinium Guardian Blue View Larger Image


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Shipping begins in late March based on ground temperatures, warmest zones first. Learn More…

Guardian Blue Delphinium produces tall dark blue, purple spike blossoms. Part of the Guardian series which were bred for uniform flowers and early blossoms. These re-bloomers will bloom in early to mid-summer and continue if the growing season is long enough and they have been trimmed back in time to grow again. Plant in the back of the garden and stake if not protected from the wind for best results. Guardian blue Delphinium make an excellent cutting flower because of their thick stems and are deer resistant. (Delphinium)

Zones 3 - 9
Deer Resistant
Deer Resistant
Cut Flowers
Cut Flowers
Light Requirements
Full Sun
Full Sun
Mature Plant Size 30-40" tall, 18-23" wide
Bloom Time Early to mid summer
Size Plant - 3" pot

Plant Information

Choose the right spot.This is important. These plants need excellent well-drained soil, rich in humus. And maybe even more important, they need some protection from the wind and rain. Blowing wind and rain can ruin them, just when you're expecting the big bloom. Don't let that happen. Choose some spot with something behind them--a wall, a tall strong plant, something.

SKU ASLPM31 Common Name Larkspur Botanical Name Delphinium elatum Zones 3, 4, 5, 6, 7, 8, 9 Light Requirements Full Sun Flower Color Blue Mature Height 30-40" tall Estimated Mature Spread 18-23" wide Bloom Time Early to mid summer Planting Depth Crown of plant should rest just at or above the soil surface after watering in. Ships As Potted Plant Foliage Color Green Planting Time Spring / Summer Soil Moisture Average, Well Draining Advantages Deer Resistant, Cut Flowers Ships to Hawaii, Alaska & Canada No


Shipping begins in late March based on ground temperatures, warmest zones first.

As soon as your order is placed you will receive an order confirmation email that will include your shipping information. We ship perennials and spring-planted bulbs at the proper planting time for your hardiness zone. Perennials and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

You will receive a second email the day your order ships telling you how it has been sent. Your order is scheduled to arrive at your door, fresh and ready to plant, usually within 3-5 days of leaving our warehouse, depending on your shipping address. We pack our plants to withstand up to 10 days in transit, in the event transit is delayed. We cannot guarantee arrival on a specific day. Please make sure to open your package upon receipt and follow the instructions included.

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USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:

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