Happened to me too. Grew a pumkin - couldn't deliver. Grew another one - still can't. Not sure if I should cancel the errand
Both grew orange. I used to grow whites but the last few were orange.
I planted them with the seeds I got to perform the task or on other Agatha errands. Basically I used up all the seeds I was given. Used some fertilizers, too. First time it grew largest but couldn't give it away. Second time I grew extra ones, this time medium - none could be delivered. Then I tried purchasing a pumpkin - nope also. I even tried gifting her a pumpkin I grew but she just accepted and that was it. All of this was done and when I had to deliver a homegrown pumpkin to Agnes there was no issue at all - actually, no issue with other errands either.
