They might be self-pollinating; I think some citrus plants are.
Otherwise, if they're a size that you can reach, you can pollinate by hand. Get yourself a small feather or a soft paintbrush, like the kind that comes with a kid's watercolour box. Starting at the top (or wherever; it's just for ease of keeping track of where you've been), sort of "fluff" each flower to transfer the pollen around.
If these are big trees, well... I have no idea, but you could at least reach the low branches?
![[community profile]](https://www.dreamwidth.org/img/silk/identity/community.png){kind=small}
(no subject)
Date: 2011-05-07 05:36 pm (UTC)Otherwise, if they're a size that you can reach, you can pollinate by hand. Get yourself a small feather or a soft paintbrush, like the kind that comes with a kid's watercolour box. Starting at the top (or wherever; it's just for ease of keeping track of where you've been), sort of "fluff" each flower to transfer the pollen around.
If these are big trees, well... I have no idea, but you could at least reach the low branches?
Good luck!