[davidw]

Now I wish I could try all of these.

[s0rce]

There is an annual citrus festival in Riverside, CA where many hybrids are developed.

[wgrover]

Yes! And every day the California Citrus State Historic Park is open for tours and tasting of various citrus varieties:

https://www.californiacitruspark.com

[dheera]

Just walk around San Jose residential neighborhoods, all the combinations are literally dropping everywhere.

[cwmoore]

There was a great pomelo tree around the corner from me a few years back.