Harden

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Harden

1. To secure a computer system to make it more likely to withstand an attack from a hacker.

2. See: Hard asset.
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For plants that have been nurtured in a glasshouse or other protective environment, it is not wise to rush the hardening off process as one cold, wet night outdoors could ruin months of loving care s now have been grown in very sheltered conditions under s 2 Divide and conquer - now that many spring plants have given us a wonderful display, it is time to thing about lifting, dividing and replanting them - Pulmonarias and Primulas are two that really respond to this treatment BLOOMING: Hawthorn Blossom, a stunning herald of spring but also an indicator of warmer weather on the cards
Hardening off is the process whereby plants grown in a sheltered environment are gradually subjected to harsher conditions, so that when they are transplanted into their final position outdoors they can withstand adverse conditions, even a frost.
Hardening off can be done in one of two ways: either in a cold frame where you can simply lift the glass up and down or by putting the plants out during the day and bringing them in at night.
You don't see many cold frames these days - strange as they are invaluable for hardening off plants, getting them used to cool conditions but keeping them frostfree.
Sow seeds singly in pots indoors on a windowsill or heated propagator in late April and grow in a cool room, gradually hardening off the plants.
It's best to wait until late May or early June to plant out after hardening off.