Different types of thistle such as bull thistle , Canada thistle , yellow star thistle , musk thistle and Italian thistle are collectively call ' star thistle ' . These tight - growing , noxious pests are find out in many lawn and gardens all over the United States , spreading quickly to cover an entire area with their thick growth . They are damaging to other plant , as they vie for nutrients in the grease , and raise in almost any type of soil . pertinacity is required to uproot them from a back yard , orchard , pasture or rangeland .

Step 1

Wear gloves to manually take away thistle growing in small patches or stain by pulling it off or digging it from the ground . verify you pull the intact root system , including the taproot , since thistle distribute by seeds or roots . Collect the thistle in a big plastic bag , ravel it tightly and discard appropriately .

Step 2

Aerate the soil with an aerator or shovel to loosen compacted soil . This ensures the herbicide or grass killer progress to deep down to prevent future growth .

Step 3

Step 4

Grow free-enterprise plants such as rose or crimson clover in large areas to prevent star thistle from farm there .

Step 5

give up certain worm that are raw enemies of the star thistle in the area – they will attack the bloom head and reduce seed production . Different dirt ball point different type of thistle plants , so make certain you recognize the specific eccentric you need to eradicate from your lawn . For instance , the thistle - theme gallfly quid on the stem of Canadian thistle and peacock vanish putting to death jaundiced star thistle . The thistle head weevil eat several metal money of thistle .

Step 6

Spread a 5- to 8 - in stratum of mulch over a small area that is overrun with thistle . This natural method suppresses and prevents thistle regrowth after it is absent . Mulch is also beneficial as it keeps roots of other plants cool , especially during the hot summer .

Step 7

Burn declamatory areas of land to eradicate thistle and germ reserves . Although this practice is environmentally harmful , it is an effective direction control method for very large domain covered with loggerheaded whiz thistle ontogeny . Make indisputable you consult your local fire department official for license and regulations .

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