Yuzu Companion Plants
Citrus trees, fall prey to insects easily, thus some of the best citrus tree companions are those that either deter or draw away harmful bugs. Marigolds are an excellent companion crop for almost any plant because their smell drives away so many bad insects, petunias and borage will do the same. Nasturtium, on the other hand, draws aphids to it, they will choose the nasturtium rather than your citrus tree. Sometimes, companion planting under citrus trees has more to do with attracting the right bugs, some love to eat the things that love to eat your plants. Yarrow, dill, and fennel all attract lacewings and ladybugs, which feed on aphids. Lemon balm, parsley, and tansy attract tachinid fly and wasps, which kill harmful caterpillars. Another good set of citrus tree companions are legumes, such as peas and alfalfa. These plants leach nitrogen into the ground, which helps very hungry citrus trees. Let your legumes grow for a while to build up nitrogen, then cut them back to the ground to release it into the soil.