How to Grow Crocosmia Bulbs? Crocosmia are popular and attractive flowering bulbs. They are perennial flowering plants grown and propagated by underground corms. Native to South Africa, they grow bright green strappy foliage with multiple bright red, yellow and orange blooms atop tall slim stems. Because of they are growing from corms, and have the classical corm habit of producing a new corm – for the next year on top of the current corm which dies off. They can be also used as cut flowers and are raised for this purpose by professional growers.
They are easy to grow from corms or bought as small plants from the nursery or garden centre. They can be bought as dormant corms throughout the autumn and winter and planted right away. When you are planting Crocosmia, always plant the corms at least 10 cm below the soil level and with a space between corms of at least 15 cm. Crocosmia is happy in full sun to part shade. Soil type is almost no problem, though average to loamy, well-drained drained soils seem to suit Crocosmias better. Will normally survive and even thrive in drought conditions. But they will not survive in soils that are water logged.
A. Crocosmia bulbs arrival: you must unpack box and check condition of all plants. Plants packaged in bags should be free from excessive moisture, so if a lot of condensation has formed on the inside of the bag, open and let it air out.
B. Soil and Location: Plant your Crocosmia bulbs in full sun to part shade in average to loamy, well-drained soil. If the soil is heavy or doesn’t drain well, mix in a generous amount of sand. The soil should be well drained and can be somewhat moist but never wet. If there are still water puddles 5-6 hours after a hard rain, scout out another site.
C. Moisture: they are very drought tolerant and only need occasional moisture when it is very dry. Water the newly-planted Crocosmia bulbs and keep the soil moist throughout the growing season. This bulb can handle drier soil conditions but it grows best with moist soil.
D. Spacing: Plant the bulbs about 8″-10″ apart to allow the corms plenty of space to naturalize and multiply over several seasons.
E. Depth: Plant the bulbs (corms, actually) about 5″-6″ deep. In warmer zones they don’t need to be quite that deep but this helps with winter protection in the north.
“The Crocosmia bulb is considered semi-hardy and is intolerant of temperatures below 28 degrees F.
Best use of the Crocosmia Lucifer is made in flower borders and beds and as cut flowers. They are also a favorite of hummingbirds and so make a good choice for bird gardens.” — ehow.com
“Important – The growing tip of a crocosmia corm is sensitive. Identify this area and try not to touch it. Bumping or bruising it can make the corm less likely to sprout.” — easytogrowbulbs.com
“Feed your crocosmia with a good quality granular flowering bulb fertilizer in early to mid-spring after growth has appeared above the soil and once again in the summer.” — gardenguides.com