Eryngium giganteum 'Silver Ghost'
giant sea holly
- Position: full sun
- Soil: dry, well-drained, poor to moderately fertile soil
- Rate of growth: average
- Flowering period: June and August
- Flower colour: steel-blue flowers surrounds by silvery white bracts
- Other features: ideal for use in dried flower arrangements
- Hardiness: fully hardy
Teasel-like pale green flowers, which turn to steely-blue as they mature, are surrounded a ruff of silvery white bracts. This rosette-forming biennial is great for the front or middle of a sunny, well-drained border. The attractive foliage is displayed to best advantage if the plant is mulched with or planted in gravel. A biennial plant, it will die after flowering in its second year, but self-seeds freely in a good spot, thus ensuring more will follow.
- Garden care: Lift and divide large colonies in spring. Avoid the temptation to cut back the flowerheads in autumn as they provide interest in the winter garden.
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Q:Sea Holly going dark brown?
Hi, I was so pleased with the beautiful 'Sea Holly' recently purchased from your web-site. I am not at all familiar with sea hollies, but I planted it in a very sunny position into my clay soil. It seemed very happy there for a few weeks, but is now looking unhealthy with some brown leaves. I think it may be due to the heavy rain of late. I would appreciate some advice regarding same. Kind Regards, LindaAsked on 7/30/2009 by Linda Payne
A:Hello Linda, Eryngiums love well drained, poor soils with lots of sun, so if it is not flourishing, it is possible that your soil is too heavy and wet for it - especially after all this rain we have had. The best thing you can do then is to move it to a soil that has better drainage (or even a pot) and it should pick up.Answered on 7/30/2009 by Crocus Helpdesk
Q:Eryngium bourgatii' Picos Amethyst'
Hello I bought 2 Eryngium bourgatii 'Picos Amethyst' from you in April. One of them has flowered beautifully (amazing colour) and the other one has just sat there sprouting more leaves. They are close to each other - could that be the problem, the flowering one taking all the nutrients from the other one - or is there something else wrong? Any advice, gratefully received. Many Thanks, EdelAsked on 7/20/2009 by Edel Erickson
A:Hello again Edel, Do give it a feed, but I would not expect to
see instant results - it may be that the plant won't flower until next
year. Best regards, Helen Plant DoctorAnswered on 7/20/2009 by Crocus Helpdesk
A:Hi Helen That's great. Thanks a lot. I'll give it a feed and see what happens - such a brilliant plant. Thanks EdelAnswered on 7/20/2009 by Edel Erickson
A:Hello Edel, There may not necessarily be anything wrong, but one may be putting most of its energies into producing leaves rather than flowers. Unfortunately plants do not always grow in the same way, but given the right conditions there is no reason why it won't eventually flower. All you need to do is make sure it gets well fed and watered and gets plenty of sun. If you want to give it a bit of a push you can feed it with Tomorite. I hope this helps. Helen Plant DoctorAnswered on 7/21/2009 by Crocus Helpdesk
Q:What plants would you recommend for my Mediterranean style garden?
Our garden is quite well established and has a Mediterranean feel. We have quite a few spaces that need filling and were hoping you could suggest a few things?Asked on 3/31/2005 by Mrs C Taylor
A:We have several plants that might interest you - here are some of the best Lavandula http://www.crocus.co.uk/search/_/search.lavandula/?s=lavandula Cistus http://www.crocus.co.uk/search/_/search.cistus/?s=cistus Kniphofia http://www.crocus.co.uk/search/_/search.kniphofia/?s=kniphofia Euphorbias http://www.crocus.co.uk/search/_/search.euphorbia/?s=euphorbia Yucca filamentosa http://www.crocus.co.uk/plants/_/shrubs/yucca-filamentosa-/classid.4537/ Eryngium http://www.crocus.co.uk/search/_/search.eryngium/?s=eryngium Sedum http://www.crocus.co.uk/search/_/search.sedum/?s=sedum Brachyglottis http://www.crocus.co.uk/plants/_/shrubs/mediterranean-plants/brachyglottis-dunedin-group-sunshine/classid.4376/ Convolvulus cneorum http://www.crocus.co.uk/plants/_/shrubs/mediterranean-plants/convolvulus-cneorum-/classid.940/Answered on 4/1/2005 by Crocus
Q:What can I plant in a Mediterranean style garden?
I want give my garden a Mediterranean look but I do not know what to plant. Could you please help?Asked on 3/29/2005 by firstname.lastname@example.org
A:There are quite a few plants that we sell on the website which will give you a mediterranean feel to your garden - here are some of the best any of the Kniphofias http://www.crocus.co.uk/findplant/results/?CommonName=kniphofia any of the Euphorbias http://www.crocus.co.uk/findplant/results/?CommonName=euphorbia Yucca filamentosa http://www.crocus.co.uk/findplant/results/?CommonName=yucca+fil Stipa tenuissima http://www.crocus.co.uk/findplant/results/?ContentType=Plant_Card&ClassID=1000000022&CategoryID= any of the Eryngiums http://www.crocus.co.uk/findplant/results/?CommonName=eryngium any of the Sedum spectabile http://www.crocus.co.uk/findplant/results/?CommonName=sedum+spect any of the Bergenias http://www.crocus.co.uk/findplant/results/?CommonName=bergenia Erigeron http://www.crocus.co.uk/findplant/results/?CommonName=erigeron Brachyglottis compacta Sunshine http://www.crocus.co.uk/findplant/results/?ContentType=Plant_Card&ClassID=4376&CategoryID= Convolvulus cneorum http://www.crocus.co.uk/findplant/results/?ContentType=Plant_Card&ClassID=940&CategoryID= Phlomis italica http://www.crocus.co.uk/findplant/results/?CommonName=phlomis Lavandula x intermedia Dutch Group http://www.crocus.co.uk/findplant/results/?ContentType=Plant_Card&ClassID=4046&CategoryID= Festuca glauca http://www.crocus.co.uk/findplant/results/?CommonName=Festuca+glauc&x=12&y=10Answered on 3/30/2005 by Crocus
There was a time when alliums were thought of only as vegetables. However, the taller varieties with their huge globe flower heads are now one of the stars of the architectural plant world. The stiff lollipop heads off-setting sharp vertical leaves, tall,Read full article