The only negative experience I have had with this beautiful herb is with intense rainfall, the huge plant can flop apart with the weight of water soaked flowers. Fennel also makes a temporary screen against neighbors who are a bit too curious. Plant it thickly, and your lovely green screen will give you some much-needed privacy. Borage is delicious and fast growing. It fills out with lovely foliage, and then the flowers arrive. Your neighbors will wonder where in the world you found such a commanding specimen. It truly is a must-have if you have the room. For more interesting ideas for Borage, check out: 10 Companion Herbs For Tomatoes. Angelica may be a lesser known herb for many of us, but it deserves some attention. Use it as a foil to your shorter herbs, grow it against a weathered outbuilding to add some rustic charm, and of course, grow it as a focal point; possibly for an English-themed garden? Grow comfrey where it can either spread unencumbered or grow it in large pots and sink those into the soil. Comfrey spreads by root, making it nearly impossible to remove. We grow it in large feeding tubs, where it can spread for a few years, yet not take over the actual herb gardens. We have grown it near the goat’s pasture, but those girls seem to keep it eaten down so it stops producing.