When and how much to water
The varieties and species of the genus called Phormium are simple plants to grow and very resistant. If they grow in continental contexts, summer irrigations are regular but not abundant, so as not to drench the soil too much. On the contrary, if the plants live in coastal areas where the climate is hot and muggy in summer, it is advisable to supply more water to be dispensed several times during the week. With the arrival of the autumn season, the watering must be reduced and become necessary only if the winter is low in rain. Water stagnations that can damage the rhizomes are absolutely to be avoided, leading to the onset of mold and rot. To avoid this possibility, it is recommended to use a substrate that allows the correct drainage of the irrigations.
How to take care of it
Phormiums are plants that can grow safely both in the open ground and in pots. Resistant to cold temperatures, they also withstand thermal conditions below zero. Furthermore, they do not fear the hot Mediterranean summers and humid climates. They adapt to different types of soil, but in order to obtain ever-growing growth, it is recommended to choose a loose, soft, well-drained substrate rich in organic matter. In addition, these plants are often used for the creation of composite rock gardens. The specimens of Phormium live well close to the sea, as they are not affected by the brackish air and strong winds. The plants that grow in pots, every two-three years must be repotted in larger and more capacious containers, to make the root system develop.