Sea Holly (Eryngium planum)

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 60-90 cm
Plant Spread: 30 cm
Flowers: Showy
Flower Time: Summer
Late summer or early fall
Fall
Uses: Cut Flower
Wildlife Attractant: Bees
Resistances: Drought tolerant
Propagation: Seeds: Provide light
Self fertile
Stratify seeds: 4 weeks if sowing indoors
Days to germinate: erratic
Suitable for wintersowing
Sow in situ
Start indoors
Can handle transplanting
Other info: Seeds are short viable, best to sow direct after ripening
Pollinators: Beetles
Flies
Bees
Miscellaneous: Tolerates poor soil

At dusk, this plant appears as a light blue haze or apparition. 8

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Comments:
Posted by Bonehead (Planet Earth - Zone 8b) on Oct 12, 2013 10:47 AM

Dry flowers by cutting them just before the blooms have fully opened. Deadhead as a clump when most have turned brown. May re-seed. Very prickly, watch out!

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Discussion Threads about this plant
Thread Title Last Reply Replies
Floral Alphabet Soup!! E .... eh? by KatEnns Jan 15, 2018 8:24 AM 41
What's Your Favorite Sea Holly by Frillylily Mar 28, 2019 9:42 AM 31
What other plants do you grow besides Irises? by creativeclover Jun 4, 2018 3:20 PM 97
What's Blooming - 2015 - Photos and chat. by NJBob Jan 1, 2016 6:25 PM 1,786
Drought tolerant perennials by virginiarose Jan 9, 2012 12:00 PM 89
Spring In The Garden! by NEILMUIR1 May 21, 2011 1:04 PM 117
My wintersowing adventures 2010 by gemini_sage Apr 9, 2014 5:08 PM 55

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