Dear Steve,

Thank you for contacting us about your fruiting plants. There are seven levels in plant taxonomy. From broadest to most specific, they are:

1. Kingdom.
2. Phylum.
3. Class.
4. Order.
5. Family.
6. Genus.
7. Species.

Blueberries are in the taxonomic Family Ericaceae. Grapes are in the Vitaceae family. Usually, only similar plants at the species level can cross-pollinate. Very rarely does cross-pollination occur at the genus level. But plants from different families will never cross-pollinate because they are too dissimilar.

I hope this answers your question. Please write again if you have more questions.

So what do I have here? They are starting to turn blue. The grapes on the same plants are tiny right now.

Freak of nature? Can't wait to taste them.

Hello again,

I'll admit the fruit does look strange, but I can't tell you more from photos. If you can bring a sample (including both leaves and fruit) into the Extension office, we may be able to learn more with closer inspection.

The Help Desk at the Marion County Extension office is generally open from 9am to 1pm, Mon-Fri. @ 1320 Capitol St NE #110, Salem, OR 97301 Phone: 503.373.3770 

Alternatively, you can visit the Marion County Demonstration Garden @ 3180 Center St NE, Salem OR 97301 (behind the Health Services Building). Master Gardeners are there on Monday and Saturday mornings, and often our berry specialists are available. 

I'm sorry we can't provide more information at this point, but then nature always holds surprises.

Thank you. You've given me great info.