A mixture of 1 to 2 pounds of salt (NaCI) dissolved in a gallon of water can be sprayed or sprinkled on the bed, but not on emerging spears or young ferns. Day long sunlight not only ⦠Nanette145. The idea was the salt would kill the shallow rooted weeds and not harm the more deeply rooted asparagus. Asparagus is a fairly unique vegetable because in a healthy mature patch, you harvest first and grow later. 1 decade ago. It may seem like a daunting task to reclaim an overgrown asparagus patch, but there are several tried-and-true methods for killing weeds in asparagus and maintaining a healthy asparagus bed. But the salt can also break up and damage the soil structure in your planting bed. Hi, You don't really need to add salt unless you are in a very sodium depleted area. I heard you can use salt to control the weeds in an asparagus patch. ((They don't say that the salt from ice cream makers is usually ROCK SALT )) Many old time gardeners say applying rock salt on your asparagus patch can keep the weeds under control. Ask a Master Gardener: Don't salt asparagus trying to kill weeds I have a lot of grass and weeds in my asparagus patch. Native to the seacoasts of Europe and Eastern Asia, asparagus is known for its tolerance of salt. Favorite Answer. How to Kill Weeds in Asparagus Patch. Asparagus is a perennial vegetable that grows through a combination of roots and rhizomes. What type of salt to use in an asparagus patch, iodized or not? I would like to get rid of them without using chemicals. Salt will kill weeds in an asparagus bed and wonât harm the asparagus plants which can tolerate a saline soil. Choose a spot thatâs in full sun. Caring for asparagus requires understanding the needs of both its growing and its storage system. The asparagus thrived, and my education in growing this long-lived perennial delicacy began. Asparagus shoots---the edible portion we think of as asparagus---are shoots from the rhizomes. However we don't recommend this now, because too much salt in the soil will eventually kill the asparagus, too! Answer Save. Relevance. Feb 26, 2016 - An old method of controlling weeds in the asparagus patch was to pour the water from an ice cream maker over the bed. Using Salt to Control Weeds in Asparagus Patch. Given the right conditions, an asparagus patch can offer yields for 10 and 15 years once those first two are over. Is this true? Asparagus has a higher tolerance for salt in the soil that many weeds do, so an old practice used to be to pour the salty water from the ice cream maker over the asparagus bed to kill weeds. Salt was an old remedy that is not recommended. The edible portion of asparagus is the spear, which pushes up through the soil from a deep, energy-storing root system. 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