Fern or Weed or Both - How to kill this weed please?

[Maxis]

. I cannot get rid of these Ferns / Weeds! What is it and how do I kill it please? See photos...

[rainbowgardener]

It's a wildflower, yarrow. It is native throughout the US and parts of Canada. Yarrow is an herb that has had many medicinal uses:
https://www.webmd.com/vitamins/ai/ingre ... 151/yarrow

I put yarrow flower in herbal tea blends. Here's one lovely one:

Love Charm Tea: 3 parts yarrow, 1 part lavender, 1 part anise hyssop, 1 part spearmint. (this one came out especially yummy! )

that came from this thread where I posted some herbal tea recipes: viewtopic.php?p=128195&highlight=herbal+tea+recipes#128195

[applestar]

Haha I was going to say, that’s not a weed — it’s yarrow!

Yarrow is resilient to mowing and light walking and grows into nice steppable lawn. It even blooms on teensy short stalks. I’m nurturing a patch to expand in my front yard.

In the backyard I have multiple patches of varying maintenance — some Are mowed occasionally, though not as regularly as the front, and some are grown in beds so I can harvest full size, unstressed healthy plant parts for herbal use like rainbowgardener mentioned.

[imafan26]

Yarrow reseeds readily. You need to keep cutting off the flowers. I made the mistake of planting it once, I used Round Up, the roots are not that easy to dig up completely.

[rainbowgardener]

You are in Hawaii where everything grows wild. In cold winter places, yarrow does fine and returns like a perennial, but it does not reseed very much and doesn't spread rampantly. I have had to pull other things, like lemon balm, which does tend to turn into a weed in the garden, but never yarrow.