I built a tower trellis for my daughters garden.
Uprights are 2x2x6 (2x2's are actually 1.5x1.5). Cross members are 1/2" x 3/4". All Pine. We plan to string jute up the sides looping around each cross member to the top cross member, in order to grow peas. Two years ago we made a 4 ft. Tepee for the peas and it just wasn't tall and strong enough.

Bottom frame is secured with carriage bolts, cross members are glued and nailed. Top underneath is secured with heavy plywood 4x4 square, screwed into poles and cap added/glued to that and then final 1 x 1/2 inch fascia to finish off outside.

The bottom square frame will sit slightly below the soil and legs 5 inches deep to steady it better. The very top was a Newport High Pyramid treated post cap I found on Amazon. Found all the pine at a local Lowes store.
#72889.

First photo is stages during build of course and
bottom photo is final after staining.

Added to the garden and added jute ties for peas to cling to.

Looks great!

That would be a beautiful addition to any garden, vegetable or flower!

Gorgeous!
Did you do anything to reduce weathering and rotting of the wood?

To Henderman,
I did stain it with a water based stain.
I've used it before, it doesn't leave a residue smell once it's sat outside for little while.
I'm sure it will eventually weather and need replacement in a few years, but the same stain has kept the raised beds from rotting after three years.
After I took the photo I also added two 14 gauge wire supports attached to the fence and the post on the left in case it gets hit with a blast of wind once it's full with vegetation.

Very nice looking in the garden. Great addition!

The pea trellis appears to be holding up the peas, but we planted way too many! We used fish fertilizer and they doing very well.
A Bee house is in the background and recently the leaf cutter bees have finally emerged.



This is looking from the outside of the garden. The flowers were added to attract pollinators.