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PlantFiles: Milk Thistle, Mary's Thistle
Silybum marianum 'Adriana'

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Silybum (SIGH-lee-bum) (Info)
Species: marianum (mar-ee-AH-num) (Info)
Cultivar: Adriana

2 members have or want this plant for trade.

Category:
Annuals
Biennials
Vegetables

Height:
4-6 ft. (1.2-1.8 m)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Danger:
Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Grown for foliage
Deciduous
Variegated

Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Wear gloves to protect hands when handling seeds
Properly cleaned, seed can be successfully stored

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to view:

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Profile:

No positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral GretchenA On Sep 20, 2010, GretchenA from Spring, TX wrote:

I was surprised to read here about milk thistle having no positive qualities. It is well known to be a powerful liver detoxifier and is useful for some gallbladder disorders.

Neutral saya On May 27, 2009, saya from Heerlen
Netherlands (Zone 8b) wrote:

Yeah.. pretty and very useful to keep unwanted visitors out of the garden. I've put paper bags over the spent flowers so it could set seeds but also to prevent sprinkling its seeds around. I've saved these sharp and spiny seedheads for the birds in my neighbours aviary. The birds loved to pick out the seeds, they were fighting about it. To remove the plants at the end of the season is a very unpleasant and nearly dangerous job.

Regional...

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

Gray, Louisiana
Eidson, Tennessee
Spring, Texas



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