Question

I had planted bloom at the railway quarters aad question tag​

Answer 1

Hadn't I?

Question tag:

• It consists of a statement and a short question.
• To obtain confirmation, we use tag questions.
• We can use tags like, "isn't she?" and "didn't we?" to ask questions to turn an inquiry into a statement.
• These are more common in speaking than in writing.
• We frequently use question tags when we anticipate the audience to agree with our message.
• We should use a negative question tag when the sentence is positive.
• We should use a positive question tag if the statement is negative.

The given sentence is positive. Therefore, we should use negative question tags. Thus, the answer is,

Hadn't I?