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PlantFiles: Princess Sirindhorn's Magnolia
Magnolia sirindhorniae

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Family: Magnoliaceae
Genus: Magnolia (mag-NO-lee-a) (Info)
Species: sirindhorniae (sir-ind-HORN-ee-ay) (Info)

One member has or wants this plant for trade.

Category:
Trees

Height:
Unknown - Tell us

Spacing:
Unknown - Tell us

Hardiness:
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
White/Near White

Bloom Time:
Unknown - Tell us

Foliage:
Evergreen

Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant

Soil pH requirements:
6.1 to 6.5 (mildly acidic)

Patent Information:
Non-patented

Propagation Methods:
From seed; sow indoors before last frost
By grafting
By air layering

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By musaboru
Thumbnail #1 of Magnolia sirindhorniae by musaboru

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive musaboru On Aug 7, 2010, musaboru from Ontario, CA wrote:

Princess Sirindhorn's Magnolia hails from a swampy region of Lop Buri province in Thailand. It was discovered in the late 1990s and brought into the horticultural trade in Thailand in the past several years. The Thais have dubbed it 'Champi Sirindhorn' (pronounced like Jumpy Sirin-tone) in honor of their beloved princess.

Magnolia sirindhorniae is classified under the subsection Michelia of the genus Magnolia. It looks similar to Magnolia champaca and Magnolia x alba in appearance. The leaves are moderately glossy and flowers are similar to M. champaca but the tepals are white and somewhat wider.

For the Inland Empire (east of Los Angeles), I would say it is best to grow them in bright shade under the canopy of other trees or avoid midday sunshine, at least while the trees are still young. Sun damage can be sustained on very hot days above 90F, especially with the generally low humidity here. Perhaps they can adapt to growing in full sun here as they mature.

Mines did not go totally dormant during the Winter here. In fact, I observed them still producing new leaves and even branching out.



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