To gradually acclimate seedlings to the outdoors by leaving them outside for an increasing amount of time each day. Back to alphabetical list

To acclimatise young plants that are growing in a protective environment, to cooler conditions outdoors. This is normally achieved by leaving plants outside during the day and bringing them undercover [..]

Exposing transplants to harsher conditions before setting them out in the garden. The process of hardening off usually involves reducing water and lowering temperatures so that young plants become more “hardy” before they are introduced to the garden.

Nurture plants so they can grow in more adverse conditions

The process of increasing an indoor plant's exposure to light and colder temperatures to acclimate it to outdoor conditions.

A process whereby a plant is gradually introduced to cold temperatures giving it a chance to build cold tolerance.  Plants are naturally hardened off in the fall as temperatures grow colder.  Hardenin [..]

the natural process that occurs when plants gradually acclimate to cooler temperatures. Indoor-grown seedlings are set outside for short periods in spring to harden off before being transplanted to the garden. Hardy outdoor plants naturally harden off as winter approaches. Anything that inhibits the process can jeopardize a plant's ability to [..]

A process of gradually acclimating young plants to outdoor conditions.

The gradual acclimatisation of seedlings grown indoors or in greenhouses to outside conditions, before transplanting. This is often done in a cold frame which is gradually opened more and more each da [..]

Acclimatizing plants grown in warmth conditions to cooler outside conditions.

The method of slowly exposing a plant to outside temperatures to prevent the shock of temperature change for when the plant is finally moved outside.

To mature sufficiently to withstand winter cold.

A process whereby a plant is gradually introduced to cold temperatures giving it a chance to build cold tolerance. Plants are naturally hardened off in the autumn as temperatures grow colder. Hardening off is often used to acclimatise greenhouse grown plants to cooler outdoor temperatures in spring. Hardening off will generally take several weeks.

Term used for the nursery practice of introducing seedlings to harsh weather conditions. Read more about planting exposed areas