How to erect a wooden obelisk Please can someone tell me how to fix an obelisk in the ground?

The proper way to do this is with an auger tool & some quick setting concrete. Knowledge and physical strength come into play as well. Don't 'cut corners' on this job. Getting it wrong could result in catastrophic failure. Consider hiring somebody who can do the job with the proper tools & equipment.

if the soil is soft ie dug over then the obelisk will push into the soil even though they are angled. apply even pressure so they sink in evenly. If you don't want it permanently set in concrete then treat the ends of the wood with preservative. mine are moveable so just treated.

to further anchor it you could use metal tent pegs over the lower rail.

Many thanks.I think I’llass on the augur and cement and go for sinking it in the ground and using tent pegs.