My flying dragon citrus tree

My flying dragon citrus tree

I'm terrified! My flying dragon citrus tree has developed these brown scaly things that I imagine are scale bugs, and is slowly yellowing in the leaves and, I think, dying. My mint plant has just died of an aphid infestation that I tried to fix with the detergent method, but I couldn't find a good amount of soap-to-water ratio and it shrivelled up and died. Is there anything I can do about the scale? Sprays, home remedies? And how much soap am I supposed to use when I'm spraying aphids? Please help! Thank you so much!
Calandiva

Calandiva

Not about any plants but certainly garden related.

Not about any plants but certainly garden related.

Newbie

Newbie

pineapple plant!

pineapple plant!

New here!

New here!

Voila!

Voila!