House of the Dragon season 2 has introduced dragonseeds – but what are they?

House of the Dragon
(Image credit: HBO)

After House of the Dragon season 2, episode 3 introduced the concept of dragonseeds, episodes 5 and 6 finally set the wheels in motion. 

Now, you might be wondering just what this means, and who the dragonseeds are. If that's you, then we have you covered. We've got everything you need to know about the dragonseeds below, including which ones we've already met, as well as exactly what the word means. 

That means there are spoilers below for House of the Dragon episodes 3-6 and George RR Martin's novel Fire and Blood, so turn back now if you're not up to date and you don't want to know what might happen next in the show. 

Now the season is reaching its conclusion, it has become clear what purpose the dragonseeds have in the ongoing war between the Greens and the Blacks. With a little push from her son Jace, Rhaenyra now plans to use the dragonseeds as dragon riders, claiming wild and abandoned dragons. But so far no one has managed to tame one of the beasts, but we have a feeling that might all change in episode 7.

What are the dragonseeds in House of the Dragon?

House of the Dragon

(Image credit: HBO)

'Dragonseed' means a bastard with Valyrian heritage; the Targaryens and the Velaryons are both of Valyrian descent. This heritage allows a dragonseed to potentially claim a dragon of their own, despite not being officially part of House Targaryen or House Velaryon. 

In George RR Martin's Fire and Blood, Jace Velaryon eventually wants to bolster Team Black's dragon riding forces, so he puts out a call for dragonseeds who could potentially claim a dragon of their own. As we see in House of the Dragon season 2, episode 5, Jace's show counterpoint is also the mastermind behind a plot to recruit more dragon riders to his mother's cause. 

He points out to Rhaenyra that House Targaryen has been marrying into other families for generations, which means there could be many people of Valyrian blood scattered across the realm – and capable of riding a dragon. 

Who are the dragonseeds so far? 

House of the Dragon

(Image credit: HBO)

So far, we've been introduced to four dragonseeds. The first to arrive was Hugh Hammer, who, in the book, eventually successfully claims the dragon Vermithor. We first meet Hugh in House of the Dragon season 2, episode 1; he's the blacksmith who petitions Aegon for help.

Next, we met Addam of Hull, who in the books is a bastard of either Corlys or Laenor Velaryon (and in the show is Corlys's bastard son). He claims Laenor's dragon Seasmoke and is eventually legitimized by Rhaenyra as Addam Velaryon. His brother Alyn is also a dragonseed, though Alyn isn't able to ever claim a dragon in Martin's book. 

In episode 6, we see the brothers talk more about their mysterious heritage, one that Alyn isn't particularly proud of as he shaves off his white hair. In the same episode, Rhaenyra tests out her dragonseed theory by having one of her knights Ser Steffon Darklyn, who is apparently of Targaryen heritage, try and claim wild dragon Seasmoke. But the plan backfires, literally, as the beast burns Ser Steffon to a crisp.

At the end of the episode though, Seasmoke lands in The Stepstones and chases Addam, eventually cornering him. The episode ends with us thinking that Seasmoke may have killed Addam. But in the trailer for episode 7, we see Addam standing on a beach opposite Rhaenyra and Syrax, with Seasmoke standing behind him.

Finally, we see a mysterious tavern-goer in House of the Dragon season 2, episode 3 who, though currently unnamed, appears to be Ulf the White. He claims to be a dragonseed – bastard son of Baelon the Brave, which makes him the illegitimate brother of Viserys and Daemon Targaryen. He claims Silverwing in the source material. 

House of the Dragon continues weekly on HBO in the US and Sky and NOW in the UK. For even more on the show, check out our deep dives on: 

Molly Edwards
Entertainment Writer

I'm an Entertainment Writer here at GamesRadar+, covering all things film and TV for the site's Total Film and SFX sections. I previously worked on the Disney magazines team at Immediate Media, and also wrote on the CBeebies, MEGA!, and Star Wars Galaxy titles after graduating with a BA in English.