Giant Sow Thistle

Sonchusarboreus

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Sonchus (SON-chus)
Species
arboreus (ar-BOR-ee-us)
Synonym
Sonchus arborea
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Textured
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing
18-24 in. (45-60 cm)
Hardiness
Not Applicable
Danger
N/A
Bloom Color
Bright Yellow
Bloom Time
Late Winter/Early Spring
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Annuals
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (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
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Regional

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S
| August 2016 | neutral

this plant is incredibly rare, found in a few locations in western tenerife and is a protected species, the ones for sale are not S. arbo...Read More

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