Freesia Flower Fertilizer. You can also pinch the dead flower heads to help with foliage growth until. Freesia bulbs will not bloom in the house for the second time.
An application of high potassium or bone meal fertilizer can be given every spring once foliage emerges. Hybridizers have developed freesias with larger flowers single and double flower form a longer vase life and a rainbow of colors. Fertilize them again when buds appear.
If you intend to plant them right away look for corms that have been preconditioned for forcing which means they have gone through the dormancy period they need in order to grow when you purchase them.
Some have longer stems and some shorter. Freesia seedlings can be fertilized every 2 weeks with a balanced liquid fertilizer. A balanced fertilizer every two weeks throughout the growing season or when the corms sprout until before dormancy should be enough. In cooler regions Freesias should be planted in mid-spring after all danger of frost has passed.