Feeding Feed every week from Spring to the beginning of Autumn. In Winter only feed once a month. Feed some tomato fertilizer occasionally to encourage more blossom. Pollination If your tree is always indoors the flowers will require pollination. In the absence of flies or bees you should do this regularly when the plants are in flower by using an art brush to dust the pollen from flower to flower. Pests Watch for greenfly or scale insect and use an organic insecticide if necessary. Enjoy the fragrance of the flowers!