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short, thickened underground stem, usually covered with papery leaves. A corm grows vertically, producing buds at the upper nodes and roots from the lower surface. Corms serve as organs of food storage and in some plants (e.g., crocus and gladiolus) of asexual reproduction; they are often mistakenly called bulbs.



an underground shoot of a plant with an exterior that resembles a bulb (it is often called a bulb); however, its structure is similar to that of a tuber. The scaly leaves are dry and membranous. The nutritive reserve is stored in the pulpy stem. Corms are found in several plants, including crocuses, gladioli, and saffrons.


A short, erect, fleshy underground stem, usually broader than high and covered with membranous scales.


Botany an organ of vegetative reproduction in plants such as the crocus, consisting of a globular stem base swollen with food and surrounded by papery scale leaves
References in periodicals archive ?
Disease buildup can be avoided simply by digging up the saffron corms every three years or so, in June when they are dormant.
Each corm should produce at least two blossoms, though some larger corms have been known to produce 24
Emergence in turn displayed positive correlation with corm weight and total yield.
06%, promoted greater diameter and mass of corms, respectively, at 147 days after plant emergence (Figures 5A and B).
Induction of callus and regeneration of plantlets from corms of Crocus sativus L.
The flowers of the planted corms in the sub plots piced up early morning and counted daily, unit was given as flowers/plant.
magazine found that 88% of gladiolus corms left in the ground were growing well by the following spring, while only 69% of lifted corms were doing so.
Gladioli grow from live plants know as corms, but many people refer to these as bulbs.
While much bulb-planting is now taking place, some bulbs and corms also need lifting at this time of year.
I sometimes think that everything we esteem in this life, all that is good of the earth, is composed of promise, the promise embodied in all seeds--pine, chestnut, nannyberry, ash--in the kernels of barleys and oats, iris corms and crocus corms, all pips and spores, the promise established in the repeated waxings and wanings of the moon, in the constant return of the sun, the covenant recognized in all eggs--noddy, razorbill, squid and lumpfish, violet-tail damselfly, in the multiple jelly egg-nets of toad and frog--plus the promises made by those sacred figures and symbols we trust, the rainbow, the early promise of a messiah, the promise of salvation announced by Christ.
Each season, the parent corms are completely depleted by the above-ground stems, leaves, and flowers.