Edited in OP-Wedding tablescape advice needed, please!

DD's MIL (a very creative type) used big tree rounds to anchor the flowers and photos. DD's theme was very rustic and the tree rounds looked great!

Not as fancy as a wedding, but we had big round tables for grad parties. For one DD we alternated either a square bandana or square of burlap in the center and then had a short stack of antique books with a hazel atlas teacup on a saucer planted with succulents in them (you could sub flowers stuck into floral foam), a mason jar with fresh flowers next to it, then a white metal doily-look cutout candle holder (about 6" tall) next to that was filled with candy. I had some photos on skewers that were stuck in with the flowers. So we had varied heights on the center square. I think the square on the circle table looked good for contrast.

Wish I would have had a picture, she was my book- and plant-loving crafty girl, so it was fun to come up with that together.

You could group your mason jars on a charger plate. (I did something like that for a 50th anniversary party on round tables). Google 'rustic charger plates' and you will see a lot of choices.

DD's wedding tables had bunches of flowers in assorted jars.
Each table had a large, circular metal tray on it, to hold the jars.
The tray filled up some space, and "grounded" the jars.

oooh, i think these are adorable - and inexpensive!


www.cvlinens.com/products/plain-round-13-charger-plates-rustic?gclid=CjwKCAjwov6hBhBsEiwAvrvN6J0sNSFA4Uyj5aDlMOUStbC4sK3eLeQqy5vVlOWf0g_ps26kRb-BERoCohAQAvD_BwE

Adorable!

My friend’s daughter had them in I think four flavors for her wedding. It was great because each guest could pick a couple. I believe they also had a small cake to cut for photos.

I'm in charge of a charity that rents a clubhouse so we see a lot of weddings and parties and we put on a lot of events. Our tables are 6' so you have a lot more real estate to work with, even though the radius is only 2' bigger. You're right, your arrangements will look a little lost on that size table. The problem with chargers is they're not flat and things don't always sit squarely. A charger is going to be too small for the scale of the tables. The trick is to have them on levels and we use stuff like books, cans or upside-down bowls, just not too high. We use fabric draped to cover the levels and sometimes fairy lights. It gives more heft to small centerpieces. People used to use confetti but we've banned it because it's murder to clean up.



Yes. For a casual wedding it is a trend.

We used log slices at my daughters wedding. FYI - they are not cheap. LOL Unless you have access to a big tree and a good saw, they are expensive to buy large ones.
Each table does not have to be exactly the same. It sounds like your decor is not super formal, so having each table or sets of tables just slightly different really is a fun look!

Make some risers to lift things up. They won't be super high, just some variation in height, so everything isn't flat on the table.

Do you have a Dollar Tree near you? You can find SO much at those places to incorporate. Just think outside the box. You can use glass candle sticks glued (use E6000, not hot glue) to clear plates/platters, or even charger plates. They have some wood look charger plates (sometimes you have to order those - 12 in a case). The gray/wood look charger plates can also be painted with chalk paint if the color isn't what you are wanting.

Look for wood pieces at Dollar Tree. Some have a Crafters Square section that has wood pieces. Glue round wood balls for feet on them for mini risers.

Here is a link to instructions for making a wood bead tray. You could glue some bigger wood beads (Amazon) to lift it up an inch or so. This might be fun as a center piece on the buffet table: Dollar Tree Wood Bead Tray How-to

You can grab 4 small frames from $Tree and glue them together to form a "lantern" and put a battery candle in it (or real votives). The image below is actually 4 wood frames that were small paint canvases from $Tree with the canvas removed and distressed painted.
$Tree lanterns from canvas frames

You could do wood risers in all shapes and sizes. Using wood balls for the feet, or wood squares also. At $Tree look for the knockoff Jenga game. That is a bunch of wood pieces you can use as feet for risers. Look for wood rounds, squares, or even mini wood cutting boards to make into risers using the beads or squares as feet.



I prefer fake candles...I have a fear of fire. LOL
These are my new favorites! They are fake, but look real.
Tapers (good with $Tree holders - get some candle wax dots to hold the candle in solidly).
Tapers - comes with remote! Takes AAA batteries.


Pilar


These tealights are wonderful! They have a 5 hour timer, so if you turned them on a 5, they stay on until 10 - then the next day they come on at the same time again for 5 hours. Batterys last a long time, but I do buy replacements on Amazon - the button batteries. SO much cheaper on Amazon!
Flameless Tealight - 5 hour timer

This post includes a couple of tablescapes using crocheted doilies. Those would show nicely on the black linens. www.weddingomania.com/doilies-wedding-ideas/