This group of hostas was developed by Mildred Seaver of Massachusetts. She started hybridizing in 1970 and introduced over 90 new hosta cultivars. The vast majority of her cultivars were given a name that begins with "Sea" however, she did introduce some under other names. A few hostas by other originators have also been given a name that started with "Sea".

According to The Hostapedia by Mark Zilis (2009),"She emphasized color, substance, and marginal rippling, but most of all a seedling had to be distinct before she deemed it worthy of introduction."

An article by Warren I. Pollock in The Hosta Journal (1991 Vol. 22 No. 2) states that, "I am in favor of hosta cultivars having some identification in their names as to who hybridized or introduced the plants...The hosta introductions of Mildred (Mrs Charles W.) Seaver...are the classic example of this. I believe she was the first to do it with hostas. Many, but not all, of her introductions have "Sea" as the first word in their names...In 1980, Mrs. Ann Arett...registered an all-green hosta under the name 'Sea Shells'. As a courtesy to Mildred Seaver, and with Ann Arrett's permission, the name was changed to 'Shells at Sea' in 1983."

Note: Since the time this article appeared in 1991 many more hosta name series have come into use. We have cultivar lists from our database for many of them.

Although not included in the "Sea" series, Mildred Seaver also introduced classic cultivars such as: H. 'Christmas Tree', H. 'Don Stevens', H. 'Lucy Vitols', H. 'Spinning Wheel', H. 'Spilt Milk', H. 'High Noon' and H. 'Allan P. McConnell'.

 
CultivarPlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Sea Angel'SmallMed-GreenMarginalWhiteUnknownLight-PurpleJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Angel Wings'MediumYellow--UnknownPale-LavenderJulySeaver, Mildred--NR--
'Sea Beacon'LargeMed-GreenMarginalYellowUnknownMed-LavenderJulySeaver, Mildred.2004
'Sea Biscuit'MediumDark-Green--UnknownMed-LavenderJune into JulySeaver, Mildred--NR--
'Sea Black Beard'----Unknown--Seaver, Mildred--NR--
'Sea Blue'LargeBlue/Green--HybridNear-WhiteJune into JulySeaver, Mildred.1978
'Sea Blue Electra'----Unknown--Seaver, Mildred--NR--
'Sea Blue Leather'GiantBlue/Green--UnknownNear-WhiteJuneSeaver, Mildred & Walek, Kevin.2009
'Sea Blue Monster'LargeBlue/Green--HybridNear-WhiteJune into JulySeaver, Mildred.2009
'Sea Blue Sapphire'LargeBlue/Green--Unknown--Seaver, Mildred--NR--
'Sea Bubbles'MediumYellow--Unknown--Seaver, Mildred--NR--
'Sea Bumps'LargeYellow--Unknown--Seaver, Mildred--NR--
'Sea Bunny'LargeMed-Green--UnknownNear-WhiteJune into JulySeaver, Mildred.1986
'Sea Corty'----Unknown--Seaver, Mildred--NR--
'Sea Current'MediumMed-Green--HybridPale-LavenderJulySeaver, Mildred.2001
'Sea Delightful'----Unknown--Seaver, Mildred--NR--
'Sea Dragon'LargeDark-Green--UnknownNear-WhiteJune into JulySeaver, Mildred--NR--
'Sea Dream'LargeYellowMarginalCreamy WhiteHybridMed-LavenderJuly into AugustSeaver, Mildred.1984
'Sea Drift'LargeBlue/Green--HybridMed-LavenderJulySeaver, Mildred.1978
'Sea Ebony'LargeBlue/Green--UnknownNear-WhiteJuneSeaver, Mildred & Solberg, Robert.1991
'Sea Fire'MediumYellow--UnknownPale-LavenderJuly into AugustSeaver, Mildred.2004
'Sea Foam'MediumYellow--HybridNear-WhiteJune into JulySeaver, Mildred.1978
'Sea Frolic'LargeMed-Green--HybridPale-LavenderJune into JulySeaver, Mildred.2004
'Sea Gentian'----Duplicate--Duplicate Name--NR--
'Sea Gold'LargeMed-GreenMarginalWhiteHybridNear-WhiteJune into JulySeaver, Mildred.1985
'Sea Gold Dust'MediumLight-Green--HybridNear-WhiteJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Gold Star'GiantYellow--HybridNear-WhiteJuneSeaver, Mildred.1984
'Sea Grotto'LargeBlue/Green--UnknownNear-WhiteJuneSeaver, Mildred.1991
'Sea Gull'SmallDark-GreenMarginalWhiteUnknownPure-WhiteAugust to OctoberSeaver, Mildred.2004
'Sea High Noon'----Duplicate--Duplicate Name--NR--
'Sea Jumbo'----Unknown--Seaver, Mildred--NR--
'Sea Lighten Up'-Med-GreenStreakedYellowUnknown--Seaver, Mildred--NR--
'Sea Lightning'MediumMed-GreenMedialYellowHybridLight-PurpleJulySeaver, Mildred.1981
'Sea Lotus Leaf'LargeBlue/Green--HybridPale-LavenderJulySeaver, Mildred.1985
'Sea Master'----Unknown--Seaver, Mildred--NR--
'Sea Mist'MediumLight-GreenMarginalGreenHybridPale-LavenderJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Monster'LargeMed-Green--HybridNear-WhiteJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Nautilus'SmallYellow--Unknown-June into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Octopus'MediumMed-Green--HybridLight-PurpleAugust to OctoberSeaver, Mildred.1981
'Sea Pale Moon'LargeYellow--Unknown--Seaver, Mildred--NR--
'Sea Peridot'LargeYellow--HybridNear-WhiteJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Plain Yellow'-Yellow--Unknown--Seaver, Mildred--NR--
'Sea Prize'LargeMed-GreenStreakedYellowUnknownPale-LavenderJulySeaver, Mildred & Walek, Kevin.2009
'Sea Rage'----Unknown--Seaver, Mildred--NR--
'Sea Richmond'--Streaked-Unknown--Unknown--NR--
'Sea Sapphire'MediumBlue/Green--HybridNear-WhiteJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Shells'----Duplicate--Duplicate Name--NR--
'Sea Show Stopper'----Unknown--Seaver, Mildred--NR--
'Sea Sprite'SmallYellowMarginalDark GreenHybridPale-LavenderAugust to OctoberSeaver, Mildred.1978
'Sea Sunrise'SmallLight-GreenStreakedSpecklesHybridPale-LavenderJulySeaver, Mildred.1982
'Sea Surf'----Unknown--Seaver, Mildred--NR--
'Sea Surprise'--Streaked-Unknown--Unknown--NR--
'Sea Tail'----Duplicate--Duplicate Name--NR--
'Sea Thunder'LargeDark-GreenMedialWhiteNat-SportLight-PurpleJuly into AugustSeaver, Mildred & Walek, Kevin.2009
'Sea Transparent Chartreuse'----Unknown--Seaver, Mildred--NR--
'Sea Unicorn'SmallYellow--Unknown--Seaver, Mildred--NR--
'Sea Waves'LargeLight-Green--UnknownPale-LavenderJune into JulySeaver, Mildred & Walek, Kevin.2009
'Sea Weirdo'----Unknown--Seaver, Mildred--NR--
'Sea Whiskers'-Med-GreenStreakedDark GreenUnknown--Seaver, Mildred--NR--
'Sea White Gold'LargeLight-Green--UnknownPale-LavenderJune into JulySeaver, Mildred.1999
'Sea Wiggles'SmallYellowMarginalGreenHybridLight-PurpleJulySeaver, Mildred.1981
'Sea Worthy'----Unknown--Seaver, Mildred--NR--
'Sea Yellow Gold'----Unknown--Seaver, Mildred--NR--
'Sea Yellow Piecrust'----Unknown--Seaver, Mildred--NR--
'Sea Yellow Sunrise'MediumYellow--Nat-SportPale-LavenderJulySeaver, Mildred.1985

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