Alert: Limited Online Availability

Now that summer is here, we have limited our stock for online purchase. Find Monrovia plants at your local garden center. Pre-order for 2023 will be available later this year. ×

We no longer grow this plant.
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Guardian Blue Delphinium

Delphinium elatum 'Guardian Blue'

SKU
02632
Spikes of double, bright blue flowers atop strong stems are excellent for cutting and emerge from the mounding clumps of deeply lobed foliage. A superb specimen towards the rear of a perennial border.
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4-7

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Full sun, Partial sun

Needs regular watering - weekly, or more often in extreme heat.

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Botanical Pronunciationdel-FIN-ee-um uh-LAY-tum
Average Size at MaturityFast growing stems 4 to 6 ft. tall.
Bloom TimeSummer
Design IdeasA highbrow perennial rooted in the traditional cottage garden. It belongs in every romantic composition, particularly country gardens. Indispensable to highbrow English perennial borders. Incredible massed into large landscapes. Demanding little surface area while offering tall staffs of color, this plant is a problem solver in spatially challenging urban gardens. Excellent in naturalistic plantings around edges of woodlands and meadows as a quasi-wildflower. Charming in red clay pots and other decorative containers on porch, patio, balcony and roof garden. A cutting garden essential.
Deciduous/ EvergreenHerbaceous
Flower AttributeFlowers for Cutting, Showy Flowers
Flower ColorBlue
Foliage ColorGreen
Garden StyleAsian/Zen, Contemporary
Growth RateFast
Landscape UseBorder, Erosion Control, Hedge, Woodland Garden, Cutting Garden
Light NeedsFull sun, Partial sun
Soil NeedsFlower & Rose Food
Special FeatureImproved Pest and Disease Resistance
Water NeedsModerate
Watering NeedsNeeds regular watering - weekly, or more often in extreme heat.

Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Remove old flowers to prolong flowering. Cut back to the ground at the end of the season.

This Plant's Growing Zones: 4-7

USDA Cold Hardiness Zone Map

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant