Separate Triteleia, Freesia and Ipheion corms

A corm is a storage organ similar to a bulb.  A new corm is formed on top of the old one each year, which dries up.  Plants such as crocosmia spp. may produce small cormels at the base of the corm, and over several years a clump may become congested which reduces flowering.  To reinvigorate plants it is advisable to dig up clumps of corms when they are dormant.  Remove and discard the remnants of old corms beneath the current corm and separate any cormels.  Replant corms and cormels at the correct depth in soil which has been enriched with organic matter. 

As a general rule bulbs and corms should be planted with approximately two to three times their own depth of soil above them, and two to three bulb widths apart.