In case anyone wants to dive a bit deeper into Chile, my book on South American wine has just been published: https://southamericawineguide.com/book Free study maps are also available on the website to download.
That's the minimum, but in practice most of the vineyards are much older... a handful being planted in 1910. The vineyards are all uploaded on the South America Old Vine Register here https://southamericawineguide.com/old-vines-of-south-america-old-vine-register-the-heroic-growers-of-south-america/
A note, the VIGNO website says vine age is min 30 years. www.vigno.org/.../
Thank you!
Colchagua section needs an update--states that Apalta is still unofficial even though it gained DO status in 2018.
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Jennifer, In the section "Pre-Phylloxera and Post-Pinochet" you might want to edit the statement that says that Paul Pontallier is the current managing director of Chateaux Marguax. Unfortunately, Paul passed away 5 years ago.
It appears that you are correct! Thanks!
Viña Carmen was founded in 1850 by Christian Lanz and is still in operation which makes it the oldest continuously operating winery of Chile.