I remember when I volunteered at the Mountain View food bank (CSA) every time we had flowers to give out, these were the most precious items that day. Gifting flowers is something the Mezger family in Woodland understands very well. They provide the zinnia patch on the outskirts of Woodland. This is a give-it-forward patch. You can pick a bouquet of zinnias and you are asked to pick one for someone else, who is not able to come and pick their own. 
Check out their facebook page to follow the announcement when the zinnias are ready to pick, usually at the end of June until September. I love this concept so much! Thank you, Mezger family!
Some tips for zinnia picking. First, please note that the field has moved. It’s now located at 11990 County Rd. 96, Woodland, CA 95695. We brought our own scissors, but saw that there were scissors on a table. A very important fact I learned was that zinnias don’t like to lay down. They do much better in a vase during transport (and obviously when at home). It doesn’t have to be fancy, just bring a high jar with a wide mouth (or more if you have many to share). There is a water station to fill up the jars. Just make sure they can sit upright in your car and don’t tip over! If you have a lot of vases, this might be the spot to donate them. And I’m sure the scissors will need to be replenished, too. 
Zinnias attract a lot of pollinators, and it was pure joy to see the butterflies dance around. What a fantastic place and a generous family.
How to get there
To find the zinnias patch follow the signs attached to the blue boxes. Located at 11990 County Rd. 96 in Woodland. I did not see any opening hours, but there is a private driveway next to the patch, so please be respectful and don’t park there. 
Have you picked zinnias at the Mezger’s before?