What Happens If You Don’t Harden Off Plants? In doing so, it helps the plant build its resistance and develop its natural defenses in order to adapt to the harsher outdoor conditions. ![]() ![]() Hardening off gradually exposes the seedlings to the elements. Unfortunately, once moved outside, it will need to build its defenses to survive and grow optimally amongst the elements. It plays an important role in keeping water out as well as protect the plant from the sun’s ultraviolet rays while keeping moisture in to prevent dehydration.īecause they have been coddled, seedlings started indoors never fully developed this outer protective layer since the plant never need the extra protection then. Plants naturally develop a protective coating on their leaves. Similarly, they’ve never needed to fully develop their natural defenses. Here, you make sure they get the right amount of sunlight, temperature, humidity and moisture.Īs a result, they are not as strong as plants that have had to go through the growing pains of developing their defenses against the elements. Hardening off seedlings is important because plants that have grown in indoors have lived under controlled conditions.
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