Citrus

 is a type of flower. It can only grow from Tier 1 seeds.

Breeding
Citrus plants cannot be cross-breed without either already having a Citrus plant or a tier 4 plant. It can be grown from tier 1 seeds purchased from the supply store, but this may take several tries. As a result, it is important to occasionally self-pollinate them in order to keep a supply of seeds on hand.


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Trivia

 * Citrus is a clear reference to the Citrus genus of plants, which includes lemon, orange, grapefruit, and other characteristically sour and acidic fruits.