Growing Fennel, also Bronze fennel

View the Fennel page

21 Feb 21 colleen (USA - Zone 10b climate)
Thinking of growing fennel for the first time, to attract swallowtails. I've never grown it because I've heard it inhibits the growth of nearby plants. But I'm unclear HOW it does that. Is it a chemical exuded from the roots? In other words, would growing it in a large pot help? Or is it a compound the whole plant gives off, like a pheromone released into the air? One gardener told me they're only allelopathic if allowed to flower. Has this been anyone's experience?
12 Apr 22 Rachel (USA - Zone 10b climate)
I believe it to be invasive and can take over other plants and deprive them of light and nutrients
Gardenate App

Put Gardenate 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 Gardenate and subscribe to the free Gardenate planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | 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. Gardenate 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.