I am not sure even after looking at photos of each on line. They are very tall, 5ft, self supporting on wiry stems. The flowers are about 3 inches across and a rich yellow.They spread readily by root growth.
Not really familiar with Heliopsis but these look good for perennial Helianthus to me. Very good plants but they are vigorous and do spread quite a bit. Although they do seem to get too congested after a while and benefit from being divided in spring (around March) to reinvigorate them.
It's hard to tell though from the photo. Best thing to do would be to take apart one of the flowers to check the individual ray florets (the big yellow petals) to see if they contain female flower parts with a developing one-seeded fruit at the base, or if only the disc (inner) florets have female parts and seeds.
Cilldara's photo looks a better candidate for Heliopsis, with a more conical shape.
I've just had a look at the perennial Helianthus here which has just started to flower. The ray florets do have what looks like a small ovary at the base, but no sign of a stigma. The stigmas on the disc florets are very obvious - protruding from the petals and curled back at the top.
They spread readily by root growth.
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Not really familiar with Heliopsis but these look good for perennial Helianthus to me. Very good plants but they are vigorous and do spread quite a bit. Although they do seem to get too congested after a while and benefit from being divided in spring (around March) to reinvigorate them.
are these flowering now in the UK?
In the sticks near Peterborough
Heliopsis just coming into flower from seed I sowed in March-
Wisdom is not putting it in a fruit salad.
I reckon that's it Pete, too early for helianthus.
In the sticks near Peterborough
Having looked the difference it up I'm not convinced homebird's flower has the conical centre (receptacle) Heliopsis should have. e.g. see this table of differences: https://www.jstor.org/stable/2993714?seq=2#page_scan_tab_contents
It's hard to tell though from the photo. Best thing to do would be to take apart one of the flowers to check the individual ray florets (the big yellow petals) to see if they contain female flower parts with a developing one-seeded fruit at the base, or if only the disc (inner) florets have female parts and seeds.
I'm stuck with this one.
Can anyone help please?
It looks similar.
Flowers until September.
Photo taken last year in neighbouring garden.
Cilldara's photo looks a better candidate for Heliopsis, with a more conical shape.
I've just had a look at the perennial Helianthus here which has just started to flower. The ray florets do have what looks like a small ovary at the base, but no sign of a stigma. The stigmas on the disc florets are very obvious - protruding from the petals and curled back at the top.
Thank you Onopordum.
It looks to me like the Heliopsis have darker stems than the ones I have. They must be Helianthus. ?
I took some better photos this morning...
They were a gift from someone's garden, many years ago.
Last edited: 15 July 2017 10:55:59