Article contents
Keep cuttings just above freezing (about 1–4 °C) in a damp, not wet, medium such as sawdust, peat or sand. Check them every 3–4 weeks for moisture, mold and swelling buds. The main enemies are drying out, warmth and wet packaging.
1What cuttings need in winter
Winter storage has to provide three things.
- Cold above zero. Cuttings need rest, but not frost. New Mexico State University advises a temperature “slightly above freezing”, and the Texas A&M handbook gives 34–40 °F, that is, roughly 1–4 °C. Industrial stores for cuttings and saplings keep similar conditions: a specialist’s dissertation at the Tairov Institute (2017) speaks of 0 °C at an air humidity of at least 85% in cold rooms, and of +2…+4 °C and 80–85% for traditional storage of saplings in sand.
- Moderate humidity. Cuttings must not dry out, but the medium must not be wet either. The New Mexico handbook suggests this check: a handful of medium in the palm should be damp but not wet.
- Stability. Sharp temperature swings wake the buds or damage the cuttings. Texas A&M notes that if cuttings do not dry out, they stay viable for several months.
2Three methods: which to choose
| Method | Where | Temperature | Pros | Cons |
|---|---|---|---|---|
| Refrigerator | Vegetable drawer or bottom shelf | About 1–4 °C | Stable, easy to check, mice cannot get at them | Takes up space, not suitable for large quantities |
| Cellar or basement | A cool room that does not freeze | Roughly 0…+5 °C | Plenty of room, convenient for bundles | Can be too warm or damp; needs protection from rodents |
| Trench in the ground | A dry, raised spot protected from meltwater | Depends on the winter | No room needed | Hard to check, risk of freezing through, rodents and flooding |
About the trench, New Mexico State University writes this: choose a spot on the north side with good drainage, and in severe frosts cover it with a few centimeters of soil and loose straw. It also mentions the option of burying the cuttings upside down: the warmer top layer of soil helps callus form on the bottom cut. For most gardeners the refrigerator or cellar remains more reliable.
3How to prepare cuttings for storage
First collect and label the cuttings as described in the article “Collecting grape cuttings”. Then prepare the medium. Sawdust or wood chips, peat and coarse sand will do. Moisten it, let the excess water drain and wring it out: the medium should feel damp to the touch.
Lay the cuttings so they are visible and easy to take out: a bundle of one variety goes in one bag. Do not mix varieties and do not lose the tags.
4Step by step
- Moisten the mediumPour in water, let it drain and wring it out until it is damp but not wet.
- Lay down a layerPut a layer of medium a few centimeters thick on a sheet of plastic film.
- Lay the cuttingsSpread a bundle on the medium and cover it with another layer on top. Place the cuttings in a bundle the same way, tops in one direction, so you do not mix up top and bottom in spring.
- Wrap and labelRoll it up or put it in a bag and tie it. Do not make the bag completely airtight: a few small holes let air in. Write the variety and the date.
- Put it in a cold placeIn the refrigerator, but not against the wall with the freezer compartment, or in a cool cellar. Cover a trench with a layer of soil and straw.
5How to keep an eye on the cuttings
Check the cuttings about once every 3–4 weeks (this interval is our practical advice, not a requirement of the sources).
- Moisture. The medium should stay damp. If it has dried out, moisten it lightly with a spray bottle; if it is wet, replace it with a drier one.
- Mold. Wipe a small coating on the medium or the cuts with a clean cloth and move the cuttings into fresh, slightly drier medium. If there is a lot of mold, the cause is usually too much moisture or warmth.
- Buds. If they have swollen, opened or green tips are visible, it is too warm. Move the cuttings somewhere colder.
- Alive or not. A cutting with living wood is light and moist inside, and the bark is not wrinkled. Throw away wrinkled, dry and dark cuttings with completely brown pith.
6Common mistakes
- Too warm. The buds wake up, and the cuttings are exhausted by spring.
- Drying out. The cuttings shrivel and lose the ability to root. The New Mexico handbook states it outright: do not let them dry out.
- Too much moisture. A wet medium and an airtight bag lead to mold.
- Freezing. The sources advise a temperature slightly above zero. A freezer and an open balcony in hard frost do not give such stability, and cuttings that have frozen through and thawed root worse.
- Cuttings in water “for the whole winter”. This is no longer storage but the start of rooting: by spring the cuttings will be exhausted.
- Forgetting the tags. After a month you can no longer tell the varieties apart.
7When to take them out and what to check
Cuttings are taken out at the end of winter or in early spring, before rooting or planting in the nursery. The New Mexico State University handbook advises planting them in open ground when it has warmed above roughly 13 °C (55 °F), after soaking them in water for a few hours beforehand. Before planting, refresh the bottom cut and make sure the wood is alive: greenish-light and moist. After that the cuttings are rooted in water, in a medium or in the nursery — a separate topic, and the conditions depend on your region and variety.
8Frequently asked questions
How long can cuttings be stored?
Until spring, if they do not dry out or spoil. Texas A&M writes that with moisture maintained, cuttings stay viable for several months. The main thing is to watch them and not allow warmth.
Can I freeze cuttings?
We do not advise it. University handbooks give a temperature slightly above zero. In a freezer cuttings can be damaged, and on an open balcony they are hit by temperature swings and hard frosts.
Can I store cuttings in a basement or garage?
Yes, if it is cool and does not freeze, and the humidity is not too high. Make sure mold does not appear, and protect the cuttings from rodents.
Do cuttings need treating before storage?
Not necessarily. If you want insurance against diseases, use a preparation according to the manufacturer’s instructions. We do not give dosages: follow the label.
How can I tell that a cutting is still alive?
Make a small fresh cut at the bottom end. A living cutting is light and moist inside, and the bark is smooth. If the wood is brown and dry and the bark is wrinkled, the cutting will not root.
9Sources
- Propagation of Grape Vine Cuttings: A Practical Guide (H-322), New Mexico State University: temperature, medium, trench, checking, planting.
- Propagating Grapevines (EHT-116), Texas A&M AgriLife Extension: storage at 34–40 °F in a damp medium, viability for several months.
- How can I propagate a grapevine? Iowa State University Extension: storage in a bag with damp peat in the cool.
- Dissertation by M. M. Artiukh, “Improving the technological methods of growing grape saplings…”, V. Ye. Tairov National Scientific Center “Institute of Viticulture and Winemaking”, 2017: conditions of industrial storage of cuttings and saplings.
The figures in the article are guidelines from the sources above; in your cellar, refrigerator or climate the result may differ.
