Best way to find cultivars online?

[Rivian]

I am thinking a search engine where you put in the species name and it spits out all known cultivars. I am sure there must be some good ones.
Main concern is learning the names at all to be able to investigate further
Currently looking for pseudocydonia sinensis and celtis sinensis varieties

 

[Leo in N E Illinois]

Google

yes, you get a lot of garbage too, but you can find what you want to know if you take the time to dig.

I find Wikipedia a good starting point. It's not the "end source of all knowledge" but it will get you started.

With both species, the Chinese quince and the Chinese Celtis, (redbuds) if you really want to have an exhaustive list of all known cultivars you need to be able to search in Chinese. You won't find all the cultivars if you limit yourself to English and or European languages. The Royal Botanic Garden at Kew maintains a database of "known species and cultivars" of "all plants of horticultural significance" but in the curious arrogance of 19th century Kew, they have been real slow to include data from non-European languages. Their website is atrocious to find anything, but it is really linked through the main portal, you just have to dig, and dig and dig.

RHS - Inspiring everyone to grow / RHS Gardening

The Royal Horticultural Society is the world's leading gardening charity; join us for days out at stunning gardens, exclusive access to amazing flower shows & expert advice.

www.rhs.org.uk

 

[Leo in N E Illinois]

The RHS maintains the international registration of orchid species and hybrids. and does similar for most groups of plants.

 

[Rivian]

Couldnt find anything good on RHS or otherwise. Theres various synonyms and one uninteresting cultivar for the celtis. But I also found out the natural distribution of the celtis does not go below zone 8, so I will be cautious about getting one
I once used a nice site like Im looking for to browse punica and that worked well, but since then I forgot where it was

Generally, I do check Wikipedia, Youtube (and comment sections on relevant videos) and 1 or 2 search engines with their results

Maybe I will resort to seedling selection for the pseudocydonia

 

[BobbyLane]

Im sure the Celtis australis would do fine in your climate http://walter-pall-bonsai.blogspot.com/2011/06/cutting-back-european-hackberry.html?m=1

Potter sometimes has them and I bought one a couple years ago. as vigorous as elm n zelkova and develops the same ultra fine twigging in time

btw I was also gonna say 'google'

 

[AJL]

The RHS Plant Finder is a useful source and lists many unusual cultivars:- check it out

RHS advice & tips on garden & indoor plants | Plant finder & selector / RHS Gardening

See how RHS can give expert advice on growing, feeding, pruning and propagating plants. Find specific plants with our Plant Finder & Plant Selector.

www.rhs.org.uk

 

[Rivian]

The RHS Plant Finder is a useful source and lists many unusual cultivars:- check it out

RHS advice & tips on garden & indoor plants | Plant finder & selector / RHS Gardening

See how RHS can give expert advice on growing, feeding, pruning and propagating plants. Find specific plants with our Plant Finder & Plant Selector.

www.rhs.org.uk

I did use that

 

[AJL]

Couldnt find anything good on RHS or otherwise. Theres various synonyms and one uninteresting cultivar for the celtis. But I also found out the natural distribution of the celtis does not go below zone 8, so I will be cautious about getting one
I once used a nice site like Im looking for to browse punica and that worked well, but since then I forgot where it was

Generally, I do check Wikipedia, Youtube (and comment sections on relevant videos) and 1 or 2 search engines with their results

Maybe I will resort to seedling selection for the pseudocydonia

Im not sure exactly what youre looking for but RHS come up with 4 Pseudocydonia and 53 Celtis- how many more do you actually need LOL!!

 

[Rivian]

Im not sure exactly what youre looking for but RHS come up with 4 Pseudocydonia and 53 Celtis- how many more do you actually need LOL!!

It's literally just the species, 2 synonyms and one entry just says "Pseudocydonia" and nothing else.
I dont think I'll be getting any Celtis, the coldest part of their native range is zone 8 and I dont protect my trees in Winter

 

[Glaucus]

For rhododendron:

The International Rhododendron Register

The International Rhododendron Register

www.rhodogroup-rhs.org

For Japanese satsuki:

 

[penumbra]

It's literally just the species, 2 synonyms and one entry just says "Pseudocydonia" and nothing else.
I dont think I'll be getting any Celtis, the coldest part of their native range is zone 8 and I dont protect my trees in Winter

There are plenty of other Hackberry or Celtis. There are at least two species in the US and a Chinese one I have been growing a few years in zone 6.