Digging and Storing Bulbs

Bulbs provide a good investment for money spent and supply years of spring color in your yard. Fall is the prime time for planting of hardy spring flowering bulbs. Most bulbs can be planted until the ground is frozen. I however, have planted tons of them in the Spring and have always been successful. I have been able to keep a few of my bulbs in the ground year round, but some have to be brought in. Since it is almost time for spring bulb preservation, I am giving you information on digging up and storing your spring and summer bulbs.

Digging and Storing Spring Bulbs

Once the foliage dies back or matures in the late spring or early summer, the bulb is dormant. Summer is the dormant period for spring bulbs. As the foliage dies back, the roots that nourish the bulbs also die back. With fall rains, the bulb comes out of summer dormancy and roots begin to grow again to provide the bulb nutrients and moisture.

Once the spring bulbs enter dormancy, the time is right to dig the bulbs if needed. Some bulbs benefit from digging to divide the bulbs and spread them out over the bed.

If the choice is to dig bulbs, they should be stored in a well ventilated place and replanted in the fall. Every five years daffodils and crocus should be dug and replanted to prevent overcrowding. The first sign of overcrowding will be a decrease in the flower size, uneven bloom and uneven plant height. When this occurs, dig, spread bulbs out and replant immediately.

Digging and Storing Summer Bulbs

Most summer flowering bulbs should be dug and stored when the leaves on the plants turn yellow. Use a spading fork to lift the bulbs from the ground. Wash off any soil that clings to the bulbs, except for bulbs that are stored in pots or with the soil around them.

Leave the soil on achimenes, begonia, canna, caladium, dahlia and ismene bulbs. Store these bulbs in clumps on a slightly moistened layer of peat moss or sawdust in a cool place. Wash and separate them just before planting.

Spread the washed bulbs in a shaded place to dry. When dry, store them away from sunlight in a cool, dry basement, cellar, garage or shed at 60° to 65°F. Avoid tempertures below 50° or above 70°F unless different instructions are given for a particular bulbs.

Inspect your bulbs for signs of disease. Keep only large, healthy bulbs that are firm and free of spots. Discard undersized bulbs.

If you have only a few bulbs, you can keep them in paper bags hung by strings from the ceiling or wall. Store large numbers of bulbs on trays with screen bottoms. Separate your bulbs by species or variety before storing them.

Be sure that air can circulate around your stored bulbs. Never store bulbs more than two or three layers deep. Deep piles of bulbs generate heat and decay.

Most flowering bulbs are best stored over a long period at temperatures between 60°F and 68°F. Try to keep the humidity in the storage area as low as possible. Never store bulbs in an area where ethylene gas produced by fruit is present. Bulbs can be stored in a container with peat moss, sand, perlite or vermiculite. Another common storage method is to place the bulbs in a very loose knit sack and hang in a sheltered, cool area. Do not divide or separate bulbs before storing them.

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8 Responses

  1. This is great information. Does anyone have any good recommendations on how I could travel with my bulbs when we move over the summer? Can I use the methods above to dry the bulbs and then place them in a paper bag without any soil? Sometimes the car will get hot while we stop for meals, but would that short period time damage them?

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  4. […] Helpful Resources Digging and Storing Bulbs | Master Gardener Girls' Gardening Blog […]

  5. This website was… how do you say it? Relevant!!
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  6. I want to move bulbs that are blooming now. No one addresses this question.

  7. Very informative, Thanks

  8. Where it says “wash and separate just before planting”, does that mean before storing?

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