How to growEryngium
From the ancient Greek nameeryngeon , the significance of which is obscure(Urnbelliferae).A genus of over 200 mintage of hardy and about stout recurrent herbaceous plants , some with thistle - same leave-taking . Some species are seaside plants in the wild . All are more or less thorny and in some species , a feature article is the glistening , metal blue sheen that covers the root , the inflorescence , and the floral bracts . If the stems are switch off and allow to dry slow they retain their gloss and shininess , thus providing useful winter decorations .
Species cultivated
E. agavifolium,5 - 6 feet , narrow setaceous leaves up to 5 metrical unit in length , flowers green , sturdy in milder counties , Argentine .
E. alpinum , 2feet , upper parts tinge blasphemous , summer , Europe .
E. amethystinum , up to 2.5 feet , rich blue glazed flower - heads and upper stems , July to September , Europe .
E. bourgatii,1.5 - 2 foot , leaves marked grey - white , bloom light blue on open subdivision , June to August , Pyrenees .
E. bromeliifolium,3 - 4 feet , long , slender leaves , flowers pale green to clean , July brave in the Confederate States and west , Mexico .
E. dichotomum,1 - 2 pes , aristocratical , July and August , southerly Europe .
E. giganteum , up to 4 feet , rounded sorry heads , July and August , Caucasus . E. heldreichii,1 - 2 feet , blue , summer , Syria .
E. leavenworthii,3 feet , majestic , summer , North America .
E. maritimum , sea holly , 1 - 14 feet , pale blue , summertime to autumn , Europe , including Britain .
E.xoliverienum,3 - 4 pes , teasle - corresponding , metal aristocratic flowers , July to September , a hybrid .
E. pandanifolium,6 - 10 pes , narrow , barbellate leaves up to 6 foot in length , royal - chocolate-brown flowers , former summer , Uruguay , hardy in the south and west . E. planum,2 foot , small , deep blue flowers , July and August , eastern Europe .
E. serra,6 foot , leaves up to 5 substructure long , narrow , with spiny teeth , flush white to wan green , fall , Brazil .
E. spinalba,1 - 2 feet , small-scale bluish - white flowers , summer , Europe .
E. tripartitum,2 - 21 feet , sword blue , with long bracts , summertime , possibly a intercrossed , origin strange .
E. variifolium,14 - 2 feet , leave alone white veined , flowers whitish - green , summer , Europe . cultivar include Blue Dwarf , 2 feet ; Violetta ’ , 2 feet , violet - blue , both flowering in belated summer .
Cultivation
Plant in the autumn or in the spring , rather in light sandy land , although these plants are not especial , so long as the drain is beneficial . They like a sunny site and dislike cold , wet soil in winter . The thong - like root require the soil to be deeply - cultivated . Generally utter , eryngiums from South America are half - hardy or hardy in warm areas only . They are , however , striking plants where they can be grown . Propagation is by seed seed in boxes and placed in a cold physique in April or May ; by division of the plants in October or April , or by root word cutting .
