We report the first study of genetic diversity and population structure of
Helenium virginicum.
Helenium cuenta con unas 30 especies distribuidas de Norteamerica a Centroamerica.
Wetland taxa fared somewhat better, especially such relatively aggressive species as Pilea pumila, Polygonum lapathifolium, Leersia oryzoides, Scirpus validus/acutus, Sagittaria latifolia, and
Helenium autumnale.
New, more compact, varieties of perennials suitable for pots include
Helenium 'Short 'n' Sassy', which puts on a long-lasting display of golden blooms with chocolate-coloured cones (Dobies, www.
Helenium and michaelmas daisies tend to grow out in concentric circles leaving a woody old base at the centre - think of a pebble in a pond sending out ripples - the outer ones are the fresh growth you want to harvest while discarding the central woody base.
Helenium get their name from the Greek word helios - meaning the sun - because of their original yellow and red flowers.
Late summer can be a time when colour is at its hottest, when crocosmia, burnt orange
helenium, bright yellow rudbeckias, acid green euphorbias and an array of other plants come into their own.
At East Lambrook Manor Gardens, in Somerset, early arrivals include
helenium sahins, hellebores, Dianthus Passion, geraniums, little pinks and ballota.
Spikes of vibrant red crocosmia Lucifer rub shoulders with dazzling
helenium Moerheim Beauty, whose rich orange flowers provide a wonderful clash of colours, intermingling with chocolateleaved heucheras and backed by the deep purple flowers of buddleia davidii Black Knight.
First-year flowering perennials which can be sown early in heated propagators and then grown on in a greenhouse or cool room include achillea,
helenium, echinacea, salvia and coreopsis.
Helenium mexicanum Kunth; 01, 06, 11, 14, 18, 21, 22, 23, 24, 26; Mexico a Centroamerica.
Inula
helenium may be used not only for its stimulating expectorant effects but also to support digestion and a debilitated constitution (Mills 1989).
