The best time to plant freesia bulbs depends on the geographical region. If the gardener lives in an area that regularly suffers freezing temperatures in winter, freesia should be treated like a summer bulb and planted in the spring. In warm-climate regions, freesia should be planted in the fall.
Regardless of which time of year is best for planting freesia, certain conditions have to be met in order for the plants to thrive, states SFGate Home Guides. Freesias need plenty of sun and well-drained soils rich in organic matter. Although they need regular watering, freesia do not do well at all in soggy soil.
After freesias finish blooming for the season, it is important to leave the foliage on the plants so that the nutrients contained within it can make their way back to the bulb. This process is complete when the foliage has all turned yellow and shriveled to the ground.