Mountain Bluet

I think this centaurea montana, otherwise known as mountain bluet, rather splendid. Yet our cousins in British Columbia consider it invasive and would rather be rid of it. One reason might be that when it is dug up, new plants can regenerate from small pieces of root remaining in the soil. Like an unwelcome houseguest, this pretty flower may outstay its welcome. Having cleared the patch, hidden roots may populate it once more with perennial cornflower. Hebrews 12:14-16 states:

Pursue peace with all people, and holiness, without which no one will see the Lord: looking carefully lest anyone fall short of the grace of God; lest any root of bitterness springing up cause trouble, and by this many become defiled; lest there be any fornicator or profane person like Esau, who for one morsel of food sold his birthright. (New King James Version)

Beware of hidden roots and bitter seeds lurking in the heart, which delight to germinate and grow into giant weeds, if only the conditions and the proprietor allow them.