Is this a weed ?

Hello everyone. I have planted a mixture of different seeds this year. My first time doing my garden.
I have been proudly watching these grow, to be told they could possibly be a weed. Any ideas? Should I pull them up?

 

Euphorbia/Spurge


N.B. The plant exudes a milky sap when damaged. The sap is a severe irritant if applied to the skin. Supposed to be worse effects in bright sunlight. I get a nasty red rash of wet blisters on the inside of my arms if I cary an armfull of weeds containing them to a compost heap with bare arms.

 

Thank you so much. Maybe that's why the other things I have planted havent come up.
Should I pull them up with my hands or cut ? Sorry- very new to gardening

 

I actually burnt my arm quite badly a few weeks ago after cutting back a Euphorbia, it was during those really sunny days we were getting and I got the sap on my arm without noticing .

Three weeks later I'm still trying to get it to heal up.

So, cover your arms and wash you hands if you get sap on them.

Its never happened before so it must be the sunlight effect.

 

Also. Be careful when dealing with conifers. They at times produce a resin. You can easily damage your skin when attempting to clean any contact off.