The Gathering of Hidden Flowers

Very Poisonous Flowers aren't quite powerful enough to kill a vampire entirely, but with a few extra ingredients, it can do the job. Fortunately, I have one Flower, but still need two more.
But there's no need to worry. I am Zork. I've lived in Trilgard for over 30 years. I know everything about this region. The Flowers usually don't grow in this time of year, but I know an exception. The habitat of Giant Silver Moths will have them. If you search carefully, you'll find the Flowers. You won't be able to do that alone, but I'll try my best if you help me. Please dispatch <HFFFA7272>15 Giant Silver Moths<HFFFFFFFF> to the <HFFFA7272>North of Boar Field<HFFFFFFFF>. Meanwhile, I will collect the Flowers.

I know there're some Alchemists who can fight, but that's not me. I would go carefully while everybody is normally sleeping, but things are urgent now. Please hunt <HFFFA7272>15 Giant Silver Moths<HFFFFFFFF> to the <HFFFA7272>North of Boar Field<HFFFFFFFF>. Meanwhile, I will collect the Flowers.

What a pity! There was only one flower, so we still need one more. Don't worry. I know there's another place to get one. Unfortunately, I can't remember where it was, but wait a second. I'll check the record, so stay here.