Since thus works to replace consequently or therefore in these sentences, you need to place a semicolon before it and a comma after it. For example: We had over a month of three-digit temperatures; thus, I lost many plants in my garden.

In a sentence with two independent clauses that are joined by “thus,” you need a semi-colon before it, not a comma. You usually need a comma after it. At the beginning of a sentence, it is usually followed by a comma.

Rule 2: When “thus” connects two independent clauses, you should put a semicolon before it and a comma afterward. Correct: They had no experience in marketing; thus, they were not effective at the task. Incorrect: They had no experience in marketing, thus, they were not effective at the task.