Peony 'Blue Lagoon'


Family: Paeoniaceae
Genus: Paeonia (pay-OHN-ee-uh) (Info)
Cultivar: Blue Lagoon
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Tropicals and Tender Perennials


24-36 in. (60-90 cm)

36-48 in. (90-120 cm)


24-36 in. (60-90 cm)


USDA Zone 2a: to -45.5 C (-50 F)

USDA Zone 2b: to -42.7 C (-45 F)

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:



Bloom Time:

Mid Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Norcross, Georgia

Smiths Grove, Kentucky

Clarksville, Tennessee

Gardeners' Notes:


On Mar 25, 2011, Dodsky from Smiths Grove, KY (Zone 6b) wrote:

I purchased this peony as a bare root 3-pack from WalMart in the late spring of 2008. The photo was obviously altered to look more blue, but I was curious and the closeout price was too good to pass up.

The flowers of course aren't blue. LOL If they were they would have been worth a fortune. They do start out as a nice medium pink with a very slight lavender tinge if the weather is cooler. The color fades to a light pink as the blooms age. The flowers are semi-double. The foliage is an attractive dark burgundy red as it emerges in the early spring. The leaves mature to a medium green.

The growth habit is strong and fairly upright. It is a vigorous grower, which tends to make me suspect it may originally have been surplus rootstock put in a fancy packa... read more


On Jul 1, 2007, Crimson from Clarksville, TN (Zone 6b) wrote:

I had good luck with this Peony in fertile aerated/well draining soil.

Mulch heavily but make sure the crown is at soil level and not covered. Will not grow, remains stunted in heavy clay soils.

Do not allow to dry out to the point of wilting or the leaves will brown at the edges and it will look terrible! Here in the zone 6-7 area it needs some very light shade or a partly sunny location or the leaves will burn.

The instructions that came with this plant state that it should be top dressed with a balanced fertilizer when new growth begins to green. Fertilize again when in bud to promote large blooms.

This is a double flowering Peony, the flowers are pretty heavy and it will need a cage or Peony Loop for support or the flowe... read more