The process of gradually exposing seedlings started indoors to outdoor conditions before transplanting.
Seeds are often germinated indoors under protected growing conditions. After seedlings are established and adequate outdoor temperatures are met, seedlings should be slowly acclimated to their new location. The process can take a couple of weeks. Each day, give the seedling more time outside, remembering to keep it protected --out of harsh sun, wind, or rain. A cold frame can serve as an effective intermediary between the greenhouse (or kitchen window) and the garden. Reduce feeding during the hardening off period to slow the production of tender new growth.
The process of gradually acclimatizing greenhouse or indoor grown plants to outdoor growing conditions.
Gradual acclimatization to colder conditions. Usually used when talking about transplanting of greenhouse plants or seedlings. Can be as simple as moving outside into a protected area for a short time, to more involved methods.
the process of gradually exposing plants to cooler and adverse growing conditions to increase their chances of living when planted outside.
the gradual process of conditioning plants to the garden climate. A shaded area or a shady, wind-protected position in the garden is used to acclimatise the young plants for a week or two, then a further three days of exposed hardening off is recommended prior to planting out.
The process of acclimatising plants to harsher growing conditions. It is achieved by gradually increasing exposure to lower temperatures and air movement, often by transferring pots or trays of tender plants from the greenhouse to unheated frames. This method is typically used for half-hardy bedding plants for a few weeks before they are planted out to reduce transplant shock.
the acclimatization of seedlings.
The treatment of tender plants to enable them to survive a more adverse environment. Treatments involve withholding nutrients, lowering temperatures, allowing temporary wilting, and other methods to slow growth rate.
The process of acclimatising plants grown under protection, in the greenhouse for example, to cooler conditions outdoors.
Hardening off plants is the process of preparing plants started indoors for the change in environmental conditions they will encounter when permanently moved outdoors. The process involves a transitional period in which plants are left outside during daylight hours only and in an area where they can be shaded and protected from wind. Watering and fertiliser are reduced during the hardening off period. Gradually, the plant is allowed exposure to an increasing amount of sunlight.
The process of plant adjustment to cold temperatures.
Adapting plants to outdoor conditions by gradually withholding water, lowering the temperature, increasing light intensity, or reducing the nutrient supply. The hardening-off process conditions plants for survival when transplanted outdoors. The term is also used for gradual acclimatization to in vivo conditions of plants grown in vitro, e.g., gradual decrease in humidity. cf acclimatization; free-living conditions.
Preparing plants grown indoors for transplanting outdoors. They need to be gradual acclimatised to the conditions. To do this takes 7-10 days. On the first day, the plants are placed outdoors in a sheltered spot for no more than 2 hours, then brought back indoors. Increase this gradually every day, 4 hours on the second, 6 hours on the third, and so on. If the weather is bad (cold and rainy, windy, etc), it is ok to miss a day, or even two, then carry on where you left off, increasing the time a couple of hours a day. When you find you are just putting them out in the morning and bringing them in at night, they are ready to plant out. Do this as soon as you can, but leave them out until you do. By this stage, they should be able to survive even quite severe weather.
The process of acclimatizing a plant that has been grown indoors to outdoors. See Acclimatization.
