Freesia plants bestow lawns in late spring to summer with colourful tubular-shaped flowers. To ensure healthy blooms, follow their growing requirements. These plants need full sunlight and well-draining soil. Plant their bulbs in soil with a pH range of 5.5 to 6.5 in the late fall in southern climates and in early spring in cold regions. Springtime will usher in shoots and stems blooming flowers.
Inspect your freesia bulbs (corms) for rotting or damage. Avoid planting any bulbs that feel mushy. Dig a 2-inch hole. Place the bulb in the hole with the roots down and pointed end up. Pack with soil. Be sure that you space your bulbs at least 3 inches apart from each other. You can produce a longer blooming time by planting some of the bulbs 4 inches deep next to the other bulbs. Water the area thoroughly. Spread a 4-inch layer of mulch over the garden bed. Remove the mulch in the spring when green shoots start poking through the mulch.
Fertilise your freesia bulbs when you see green shoots with a slow-release all-purpose bulb fertiliser with an NPK amount of 9-9-6. Broadcast the granule fertiliser according to directions. Water the area thoroughly. Reapply the fertiliser as indicated on the label. Water your freesia plants when the top soil feels dry. Press your fingers into the first few inches of soil. If it feels dry, give your freesia plants water slowly without getting their leaves wet. Avoid letting their soil become saturated by letting it dry out between waterings. Allow the foliage to remain on the plant after blooming. Light and water will continue to feed the freesia bulbs. When the foliage starts to wilt and die back, use a pair of bypass shears to remove the dead foliage.
If you live in a cold climate that freezes, you will need to store your freesia bulbs over the winter. Water the planting site. Dig a few inches away from the bulbs with a spade. Lift the bulb from underneath to remove from the soil. Wash off all bulbs and dry off with a soft towel. Inspect for any fungal diseases. Look for any discolouration or soft spots on the bulb. Place the bulbs in a dry room away from light for two to three weeks. Make sure the temperature of the room is between 60 to 70F. Place in a labelled brown bag and keep in a dry, cool area. Take out of bag when the threat of frost has passed.