What is 'Covariance'. Covariance is a measure of the degree to which returns on two risky assets move in tandem. A positive covariance means that asset returns move together, while a negative covariance means returns move inversely.
23 September 2016. The heaviest red cabbage weighs 23.2 kg (51.15 lb) and was grown by David Thomas (UK), as verified at the UK National Giant Vegetables Championship in Malvern, UK, on 23 September 2016. David also holds the current record for Heaviest parsnip and Heaviest cucumber.
As the head matures, it will get larger, and become firm to feel. Cut cabbage heads when they are full and firm. Cabbage heads are actually the bud of the bloom stem, and if you left them to go to seed, the stem can be as tall as 6 feet high. Harvesting cabbage is a simple thing.Use a sharp knife to cut the leaves off below the head to help expose the stem, then cut the head away from the stem flush with the base. Once you cut the heads, pull up the plants. They won't produce anything meaningful after that.s the head matures, it will get larger, and become firm to feel. Cut cabbage heads when they are full and firm. Cabbage heads are actually the bud of the bloom stem, and if you left them to go to seed, the stem can be as tall as 6 feet high. Harvesting cabbage is a simple thing.