Q.freesia plant leaves?
Do the leaves of the freesia plant stay green all year like an iris plant or do they dry up like a tulip after blooming?

If the Freesia are in a pot, you can allow the soil to dry once the flowers have faded. The leaves will die down naturally.
If you have planted them outdoors, the leaves will stay green for awhile after flowers have faded. You can deadhead the spent flowers and allow the leaves to die back on their own.
If you live in zone 9 and warmer the bulbs can stay in the ground. Colder zones you will need to lift the bulbs.
https://www.gardeningknowhow.com/ornamental/bulbs/freesia/planting-freesia-corms.htm