Growing Cardoon

View the Cardoon page

18 Apr 24 Kim (Canada - Zone 7a Mild Temperate climate)
Do I have to start the cardoon in a seed start before that last frost or can I buy cardoons already started at a nursery/garden center?
23 Apr 24 Celeste Archer (Canada - Zone 5a Temperate Warm Summer climate)
I find that SEEDS are much better than potted cardoons. Cardoons have really deep roots -- 5 feet or so -- the cardoon drops its root VERY early in it's growth cycle -- for this reason, I prefer to use seeds. It should be noted that Cardoon requires a uniform supply of moisture. Leaves and stalks become pithy when subjected to water stress, making them unmarketable. About 10-12 inches of water, uniformly distributed throughout its growing period may be necessary. Spineless and spiny types exist. The spineless types are preferred. Named varieties are difficult to find in U.S. seed catalogs. Often the only option is a generic cardoon with no variety mentioned. 'Tenderheart' and 'Gigante' can be found in some current catalogs. One may also search European catalogs. Varieties recently available included Bianco Ameliore, Italian Dwarf, Large Smooth, and White Improved. Any of the above can be considered suitable for trial in the Pacific Northwest.
Gardenate App

Put GardenGrow in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join 60,000+ gardeners who already use GardenGrow and subscribe to the free GardenGrow planting reminders email newsletter.

Home | Vegetables and herbs to plant | Climate zones | About GardenGrow | Contact us | Privacy Policy

This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. GardenGrow is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
We cannot help if you are overrun by giant slugs.