Parade of Weeds Continues

by Carl Strang

It’s time to update the list of newly flowering weeds at Mayslake Forest Preserve, following the broad definition of non-natives, undesirables, and species which gain high reproductive rates and dispersal by trading off competitive ability and lifespan.

I’ll begin with a surprise. I was crossing a wooded area and looked down to see an orchid. But it turned out to be our only non-native orchid, the helleborine.

Helleborine orchid 1b

Thanks to the dense, competitive meadows and prairies I have, so far, found only one common mullein plant on the preserve.

Common mullein 2b

Chickory can tolerate some shade, and so has done better.

Chickory b

Thanks to the former residents of the friary, Mayslake has to be the oregano capital of the Forest Preserve District of DuPage County.

Oregano b

Not only is there a huge patch of this herb in the old friary garden, outliers have spread as far as the meadow west of the off-leash dog area. Last winter I wrote about the interesting dispersal mechanism for Queen Anne’s lace . Here it is in bloom.

QA lace 2b

So far there have been two sow thistle species flowering at Mayslake, the common sow thistle

Common sow thistle b

and spiny sow thistle.

Spiny sow thistle 2b

Vying for the honor of most beautiful tiny flower is the Deptford pink, relative of carnations.

Deptford pink b

The white sweet clover now is blooming abundantly, starting well after its yellow-flowered relative.

White sweet clover 1b

Common milkweed, weedy in its life history strategy but a native species, has been a bumblebee and butterfly magnet.

Common milkweed 1b

Another native, famed food of pop music’s “Poke Salad Annie,” is the pokeweed.

Pokeweed b

Once it’s this big, though, it’s poisonous. I’ll finish with a real undesirable, which I have been finding scattered around the preserve’s northern meadows.

Purple loosestrife 1b

Purple loosestrife can become a serious problem in wetlands.

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