Yeah, it's amazing, kind of heartening. I guess landscapers and yard crews are not too happy with how plants will sprout up in the cracks of concrete or asphalt. I have some exuberant weeds I am trying to make a dent in lately. Also I take a lot of rose cuttings and one really tiny new rooting had a bloom on it yesterday. I have never seen one that eager to bloom.

Yea, I've found self-sown annual impatiens (Impatiens walleriana) growing in concrete cracks, happy as can be. Which I always found ironic because they can be tricky, difficult even, to grow from seed for bedding plants.

As they said in Jurassic Park, "Life finds a way":)

Amazing how they can pop up where ever. I left some seeds out and the wind dispersed them into our gravel. The gravel isn't weed free so I didn't notice these radishes until they were big. It's right where we walk so pretty amazing they don't look worse.

That's crazy @aziline!

Plants are amazing. That is quite the spot it chose, apart from the rock & a hard place plus little rain it is a risk of being run over by a vehicle. Tenacious thing.

So did you eat the radishes aziline?

I thought there was part of a water balloon under the leaves at first! Very surprising. I didn't eat them. They were overgrown by the time I saw them and I have others in the garden.

https://gardender.com/blackbox-gardening/

This is exactly what I am counting on in a new experimental plot at my allotment.

It's weird how long lost plants will suddenly turn up again. A Fern-leaf Corydalis that I tried growing about 30 years ago showed up in my front lawn, and a Coffee Senna that I grew about 5 years ago showed up in a strange place. My Virginia Jumpseed, Persicaria virginica spreads around by seed very well. Some years it's leaves have chevrons and other years they dont, but I love the long flower spikes that look great in a moon garden or fairy garden.

My gardening is like black box. Species do migrate all around and I love the combinations they make naturally, but I think Im 1st and formost a species collector, so I always have to make sure that the species Im trying to establish don't get smothered by the surrounding nomads. I really need to go out there now and check on a few new additions like Fern Leaf Bleeding Heart and Prairie Smoke, to make sure they're recieving enough sunlight, and the morning glories and wild beans have been very vigorous and climbing and covering many plants. This is the point in time where I give up on removing vollunteers, so the pollinators and migrating Monarchs can have a feast. The Frostweed, Verbesina virginica is spread all over, despite my best efforts at digging up vollunteers and deadheading them. I will be deadheading and then digging out the extras. The next door neighbor had a large empty pot filled with dirt near my bed in the front yard and now there's a large blooming Showy Goldenrod growing in it that grew from the seeds of my plant. I have a yard with beds, so I want to have permenant plantings of perrenials for structure, and then let the nomadic species grow amongst them. I would do a black box style meadow or prairie if I had the land for it.

The Silphium terebinthinaceum, Prairie Dock, and Boltonia decurrens, Decurrent False Aster are purposely planted. The Brown Eyed Susans, Rudbeckia triloba and Tall Thistle, Cirsium altissimum are vollunteers.

There are planted perennials in here mixed with annual and perennial vollunteers. The tall Missouri Ironweed with the wild bean Strophostyles helvola climbing it.

Vollunteers Anise Hyssop, Agastache foeniculum, Partridge Pea, Chamaecrista fasciculata and Brown Eyed Susan, Rudbeckia triloba. The Prairie Dock was purposely planted.

Wild Senna, Senna hebecarpa, with vollunteer Bush's Poppy Mallow, Callirhoe bushii and the native morning glory Ipomoea lacunosa.

Yes, some of my most tenacious plants love to root in those spots, because no matter how much I am able to pull out their leaves, I can never get their whole root system and they happily just regrow from the roots!

One of my best-performing, self-seeded Nicotianas grew happily in a crack in the driveway asphalt.

That is a wonderfully robust plant @rusty_blackhaw!

Here is our random 'self seeded Nikkie today...November 1:

I see lots of baby verbena bs even now....November 1!

I have been keeping an eye on this lonesome verbena b for awhile now...doing it best to come to flower. Crazy where it sprouted eh? (Picture taken in October)

^^Is that a perennial verbena?

Here's one from me, a Denver Daisy:

Another one -- this Brunnera has been here a handful of years now, its perfectly content where it is so I just leave it be:

I think verbena bonariensis is a perennial but in my neck of the woods it (almost) always behaves like an annual in that it will die come the Fall (but does reseed with abandon).