Figure 1. Sweet/Italian is the most popular. As such, we recommend that dogfennel be controlled as early as possible if more than half the pasture is infested. Rather, it is much more important to select a herbicide program based on dogfennel height (Table 1). It’s a host for black swallowtail butterfly. Unfortunately, providing a “one size fits all” recommendation for dogfennel control is difficult, if not impossible. Culantro  Botanically not related to cilantro, but with a similar, somewhat stronger flavor, culantro grows well all year long here, even in the summer. Tarragon (Mexican)  This perennial grows by cutting or division and does better than French tarragon. There is no specific month when an herbicide application for dogfennel control is recommended. Shiso  This Japanese herb grows best in warm weather and does well in South Florida as an annual. Dogfennel infestation and forage production. What about caring for herbs? Bahiagrass yield declined as the growing season progressed in both 50% dogfennel cover plots as well as > 75% dogfennel cover plots. We believe it is important to focus on this weed and remove it as infestations increase beyond 25% groundcover. Usually grown as an annual, parsley can sometimes live two years. Some herbs that like extra drainage (rosemary, sage, thyme, oregano) will do well in smaller pots. Herbs that like more moisture (parsley, mint) should have fewer amendments for drainage and a higher content of organic matter. There is no doubt that weed infestations have a detrimental impact on bahiagrass production. Once they outgrow the smaller pot, plant them in larger pots. However, it is important that application rates are not reduced. They’re best grown from seeds, but you can also grow basil from cuttings. For many home gardeners who have a small garden, planting seedlings is a practical solution that saves time, especially for herbs that grow slowly. Rhondo fennel – A bulb-type fennel that produces a round bulb and matures early. Parsley  “Curly” and “flat leaf” are the most common varieties. Some of the healthiest basil plants are grown in gardens close to salt water. Herbicide timing and selection. What’s the best place to grow herbs? Many ranchers simply mow pastures in late summer to suppress dogfennel seed production. As you would expect, smaller plants are much easier to control than larger ones. All rights reserved, Article from Edible South Florida at In addition to dogfennel height, there are environmental factors to consider. Planting fennel in rich, well fertilized soil is not recommended, because the plant will lose a lot of its aromatic oils and taste if well fed. The only stipulation it requires is that it be planted in well drained soil. One major factor is application timing. Dogfennel can begin growing from the rootstock or seed as early as February in south Florida, with new growth forming progressively later as we move northward. It’s propagated from pieces of the root. For questions or comments regarding this publication contact: Institute of Food and Agricultural Sciences, Tank-mix Options for control of Tropical Soda Apple and Dogfennel (, Using Cleanwave Herbicide to Control Dogfennel (, Weed Management in Pastures and Rangeland (. Our driest time of year, especially in south Florida, is April and May when most dogfennel is relatively small. Most herbs don’t need high amounts of fertilizer, but some fertilizer is good. Florence fennel – This is the fennel you want if you’re interested in harvesting a meaty bulb for cooking. Seeded densely. It can become weedy, spreading around gardens with its underground runners. Rosemary  A perennial, this herb can be propagated from seed or cutting.