Silybum
holy thistle, milk thistle

- Height 4 ft (120 cm)
- Planting distance 2 ft (60 cm)
- Flowers midsummer to early fall
- Any garden soil
- Open, sunny site
- Hardy annual

The fast-growing Silybum marianum as cultivated mainly for its striking foliage of ovate, glossy dark green and spiny leaves heavily marbled with white veins. They are carried in flat, wide-spreading rosettes topped from midsummer on with tall stems carrying deep violet-red thistlelike flowers.

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Annuals
and
Biennials