301 Redirects .htaccess not working for blog links to pages

Question, I’ve gotten redirects to work on valleyforgeaudubon.org/bfn/pdf/recommendedPlants031410FINAL.pdf to new.valleyforgeaudubon.org/back-yards-for-nature/recommended-plants/ in .htaccess using
Redirect 301 /bfn/pdf/recommendedPlants031410FINAL.pdf https://new.valleyforgeaudubon.org/back-yards-for-nature/recommended-plants/

but it doesn’t seem to work for hyperlinks in a blog post (backyardsfornature.org/?p=1003 see recommended shrubs or native tree links in post) is this because I would have to add the blog post URL?

Thanks!