Funny 'luis' that you mention "Tidbit" as I sourced it just today for this coming season from a nursery that I frequent. (Although as I recall there were some in the group that did plant it last season...maybe Fall?).

I like the idea of more compact hydrangeas but I I worry that some are getting too small and so might look a bit 'scrawny' especially if it doesn't turn out to be a reliable bloom machine. I have found this the case for our (potted) Lava Lamp "Flare". (And maybe another example.... does anyone have specimens of vigorous, floriferous "Tiny Tuff Stuff"?)

And 'luis' what about Hydrangea macrophylla "Wee Bit Giddy" and "Wee Bit Grumpy"? Aren't they new for 2021?

Yes, they are. Available starting in Spring 2021. My search did not list them. Sorry, The info on them follows below. Thanks.

Wee Bit Giddy - A rebloomer version of Cityline Paris. From Proven Winners: "Wee Bit Giddy hydrangea will put a smile on your face - not just because it's absolutely beautiful (though it is!), but because this durable, handsome plant was developed specifically for improved performance in your garden. You might think of it as an improved version of our best-selling Cityline Paris hydrangea, as it shares its same intense red flower color and neat, dwarf habit; however, it adds in the robust durability of Let's Dance Rave hydrangea, which imbues it with outstanding performance in the landscape, even in USDA zones 5 and 6.

Available in better garden centers in spring 2021.

Top reasons to grow Wee Bit Giddy hydrangea:

- All the color of Cityline Paris with the landscape performance of Let's Dance Rave

- Big, colorful flowers

- Dark green glossy foliage

Continuous Bloom or Rebloomer

Salt Tolerant"

Wee Bit Grumpy - An intense blue/purple rebloomer version of Cityline Paris for acidic soils. From Proven Winners: "Don't be fooled by its curmudgeonly name: Wee Bit Grumpy hydrangea will put a smile on your face! Like its sister plant, Wee Bit Giddy hydrangea, it was selected for its combination of pure, intense, saturated flower color and outstanding landscape performance. And its color is really something you must see to believe: in acidic soils, its big, full blooms take on a moody, dramatic deep purple-blue. They appear amid a neat, tidy mound of compact foliage that resists disease and stands up better to cold weather than conventional hydrangeas.

Oh - and about that name! We know you're wondering: "Grumpy" was the working name that the breeder had sent the plant to us with. During its evaluation period, every time we noticed its glorious blooms and asked, "What is that?!", we'd look at the label and see "Grumpy." It made us laugh, and we thought you'd get a kick out of it, too.

Available in better garden centers in spring 2021.

Top reasons to grow Wee Bit Grumpy hydrangea:

- Big, full blooms display a deep, moody color

- Excellent performance in the landscape

- Dark green glossy foliage

Continuous Bloom or Rebloomer

Salt Tolerant"

Others I now ran into from PN (not PW):

Magical Crimson - a supposedly redder, rebloomer mophead from Plants Nouveau. Previously called the Everlasting Series, they are now called the Magical Series. "Crimson is the reddest of reds on the market to date. It begins apple green with hints of deep red, opens to a full-on explosion of cherry red, and then ages to a lovely antique combination of deep burgundy and apple green." Note that hydrangeas do not have red pigments so take references to "red" with a grain of salt.

Magical Starfield - from Van Belle Nursery in Europe; rebloomer mophead with double flowers whose blooms turn lighter pinks as the bloom ages (I would like to see pics of that!).

Elizabeth Ashley from PN (but not called "Magical" ???): "a Revolution Hydrangea on steroids, with a slightly larger habit, and larger, deeper pink flowers".

Some more to investigate.

Hydrangea arb Invincibelle Lace

Hydrangea serr Let's Dance Can Do

Hydrangea pan Little Hottie

Hydrangea pan Little Lime Punch

Thanks Pennlake!

Invincibelle Lace - this one looks like another PW smooth hydrangea (48-60" high and 48-60" wide) whose claim to fame is the stem color (dark/wine red) that goes well along with the center of its lacecap flowers.

Let's Dance Can Do - a PW rebloomer mountain hydrangea that can develop the flower buds further down their ruby stems than usual. The benefit of that is that lower located buds -if there are any partial "old wood" stems still green- may still survive and bloom. Has pink blooms that resist turning blue so you may get some purple-ish colors in acidic soil.

Little Hottie - a compact paniculata from First Editions, about 3-5' high and 3-5' wide. Starts green, turns creamy white and in the Fall, turns "antique shades of white and pink". Has "sturdy" stems".

Little Lime Punch - Another PW Little Lime-like compact paniculata whose flowers "start lime green and change progressively from the bottom up in a gorgeous array of white, light pink, and rich Hawaiian Punch red". So basically, you can get a mix of lime green, whites and pink colors as the individual blooms open at more separate times from each other.