This is Deep Blue Sea in front of Summer Squall. You may be right, but Deep Blue Sea was extremely late to rise and is still developing it blueness. The only other contender for bluest in my garden is Flemish Sky, or maybe Silver Bay, or Pewterware...

Nothing's more yellow than Dancing Queen.

Prairie Sky has been the bluest hosta I have.

Brightest yellow definitely glad tidings

and not the bluest but love the varigation and size over 5 feet across and gets too much sun (neighbors cut down 7 trees along property line) devil's advocate

Because my bright yellows are still transitioning, the best I can come up with at this time is Krossa Regal and Marrakech - which happen to be growing together as luck would have it.

Then I decided to go outside to see what else was brightening up....and I found more pairings! Since no yellow screams "I am the brightest" at the moment, (Dancing Queen still greenish) I thought I would post them as I can't decide which is the brightest yellow and bluest blue.

Blue Mouse Ears and Hydon Sunset - under the watch of Brother Stefan and Ivory Queen

An accidental pairing, Big Daddy and The Minnesota Mafia. The BD division is being removed and gifted...a baby division that leapt this year in leaf size.

Sunpower is one of my favorites.

I posted these yesterday, but they fit this post perfectly. Blue Hawaii and Limetini for me. I also love Dancing Queen!

Dancing Queen and Awakening Angel

Delona's Smile

I just went out to check on things and I saw this! I had to share.

dancing queen.

Halcyon.

I've got quite a few gold and yellows but my blues don't stay blue too long.

I can't decide which is the brightest but I think Stained Glass takes it by a hair ;)

Sum and Substance - in the right light it just glows

Fat Cat

Sutter's Mill - - it was in the latest, and last batch from Naylor Creek - they sent some nice plants too

Fire Island - it's a slug magnet

Sunny Disposition

Blue Mammoth with Stained Glass behind

Halycon is the bluest by far

Liberty has a pretty pale blue in the center

This was supposed to be Elegans but I'm not sure

All you guys have such beautiful hostas. Too many for me to comment on individually, I'd be here all night. lol

I wish I had unlimited room because I see more I like all the time.

Fire Island

For a nice, bright, and very uncommon yellow, I present:

'Tiki Torch' from Don Rawson.

Pieter

I don't have much blue but I got some nice yellows this year.

St. Elmo's Fire

Island Breeze

Stained Glass

Nice plants Allison and I like the dark mulch!

Definately into blue.

Hallelujah

Blueberry muffin

Purple Verticulated Elf

Skylight x OP seedling

The above together so you can see how blue PVE is compared to the others.

Reptilian Seedling (Lost the cross info)

Every blue deserves a gold.

On Stage OP I just planted yesterday after ripping out some volunteers and leaving this blue volunteer. The larger gold is Golden Sculpture/Thunderbolt.

Fort Knox OP with Halcyon.

Goodness Gracious with Halcyon, Krossa Regal, Daybreak, Elegans.

Key West and a young Blue Mammoth. Be an interesting mess someday.

Paradigm/Blue Hawaii with Sun Power and Journey's End.

Blue Angel and Stardust.

Just a bunch of OPs tossed together to cover some ground. Sally and Bob in foreground.

I'm addicted to yellows and blues. May this thread live forever!

The yellow is Forbidden Fruit; the big blue-green is Elegans, with Halcyon and June (I think?) in the foreground.

Ben Vernooij sharing a pot with an Elephant Ear. I had to decrease the pic's saturation...BV is super bright, but my phone's camera is a bit crazy too.

Fire Island, Heat Wave, and Blue Mouse Ears.

El Nino and Maui Buttercups, took the pic for the ferns thread but these guys are pretty blue and yellow right?

Newbie here. What does op mean please? Thanks!

OP = open pollinated = bees

That's what I thought. Thanks Steve. Sounds like I will need to start planting seeds someday - after I get what I already have planted!

OMG...I can hardly stand it. These yellow ones are downright delicious!!

I need to find that Minnesota Mafia!

early on, my grand prize is vibrant