Summer Nights Larkspur (Delphinium grandiflorum 'Summer Nights') Unavailable

Summer Nights Larkspur

Delphinium grandiflorum 'Summer Nights'

Larkspur

Currently unavailable

Compact, bushy mound of well branched lacy green leaves. Satiny midnight blue flowers cover the foliage from early to late summer. Though it is short-lived, it is definitely worth the color addition to the garden. *This plant is harmful if eaten*

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Plant facts

Mature height6-12"
Mature spread12"
Growth rateFast
SunFull Sun to Part Shade (3 to 6+ hours Sun)
WaterModerate
USDA hardiness zone3
Flower colorBlue shades
Foliage colorDark Green

Good to know

Quick answers

How big does Summer Nights Larkspur get?

About 6-12" tall and 12" wide at maturity.

How much sun does Summer Nights Larkspur need?

Full Sun to Part Shade (3 to 6+ hours Sun).

How much water does Summer Nights Larkspur need?

Moderate water use.

Will Summer Nights Larkspur grow in Utah and the Intermountain West?

It is rated hardy to USDA zone 3, so it suits sites in zone 3 or warmer, which covers most of the region. The Salt Lake Valley floor is mostly zone 7; benches, mountain valleys and high plains in Utah, Idaho, Montana, Colorado and Wyoming are colder, often zones 3–6, so check the zone for your site.

Is Summer Nights Larkspur deer resistant?

Yes, deer usually leave it alone.

Where can I buy Summer Nights Larkspur in Utah?

Progressive Plants in Copperton, Utah carries it, but it is not available right now. You can join the waitlist to hear when it's back.

Can landscape contractors buy Summer Nights Larkspur wholesale?

Yes. Landscape contractors and architects with a Progressive Plants wholesale account get trade pricing, bulk ordering and shipping across Utah, Idaho, Montana, Colorado, Wyoming and Nevada on our own trucks or by freight ($1,500 minimum outside our local delivery area). Apply at progressiveplants.com/wholesaleapp.html or call 801-565-7333.

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