What’s living so far

I sprouted from seeds this year instead of buying baby plants. Not everything has died so I consider that a success. One vine cucumber is thriving:

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The peppers are all perking along and need to be transplanted to give each other more room:

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And I have a volunteer something from the compost I mixed into the soil around the raspberry bush. I think and hope it is a pumpkin vine:

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What do you think? Is my pumpkin guess correct?