Wilson, who spent two seasons as forwards coach at the Scarlets, knows the pair well and is expecting them to perform well in the upcoming campaign.
"I have worked with George and Kirby before so I am well aware of their qualities," said Wilson, whose Blues side beat the Scarlets this weekend.
"They are both good professionals who will add not only to the squad we are building here but also the environment and culture.
"George is a hard-nosed second row forward who is uncompromising and brings real physicality to any team he plays for.
"He has both Guinness PRO12 and Super Rugby experience and will be a valuable asset to our pack resources."
Now 29, Earle was born in South Africa and joined the Scarlets back in 2012, making 94 appearances for the region.
Meanwhile Myhill, 24, came through the ranks with the Scarlets and also represented Wales at Under-20s level.
Wilson added: "Kirby is a talented player of huge potential who I feel can really develop with us.
"I worked with him at the Scarlets and as part of the Wales Under-20s, when he really impressed alongside the likes of Rob Evans and Samson Lee.
"I am sure he will be keen to take this opportunity and really push on at Cardiff Blues."
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