Nie lubię usuwać chwastów, ale lubię patrzeć, jak z ziemi wychodzą pierwsze rośliny.

Because Polish often leaves out subject pronouns when the verb ending already shows who is doing the action.

• lubię = I like
• the ending -ę tells you it is 1st person singular

So Nie lubię... already means I don’t like.... You would add ja only for emphasis or contrast, for example: Ja nie lubię, ale on lubi.

This is the normal way to say like doing something in Polish.

• lubię usuwać = I like removing / I like to remove
• lubię patrzeć = I like watching / I like to watch

Polish uses the infinitive after lubić much more directly than English sometimes does. It is a very common pattern:

• Lubię czytać = I like reading
• Lubię pływać = I like swimming

Chwastów is the genitive plural of chwasty.

This happens because of negation. Polish often changes the object to the genitive after a negated verb. Learners often first see this in simple pairs like:

• Lubię kawę = I like coffee
• Nie lubię kawy = I don’t like coffee

In your sentence, that pattern extends into the infinitive phrase:

• lubię usuwać chwasty
• nie lubię usuwać chwastów

So chwastów is the form you expect in careful standard Polish here.

Usuwać means to remove, to get rid of, or to clear away.

So usuwać chwasty literally means to remove weeds. In garden English, that often corresponds to to weed or to pull weeds.

Another very common Polish phrase is:

• wyrywać chwasty = to pull out weeds

So usuwać chwasty is correct, but a bit more neutral and general than wyrywać chwasty.

Both commas are normal Polish punctuation.

• Before ale: Polish normally puts a comma before this conjunction, just like English often does before but.
• Before jak: here jak z ziemi wychodzą pierwsze rośliny is a subordinate clause attached to patrzeć.

So the structure is:

• Nie lubię usuwać chwastów, ale lubię patrzeć, jak...

That second comma separates I like to watch from how the first plants come out of the ground.

Here jak means something like how or as.

In this sentence:

• lubię patrzeć, jak... = I like watching how... / I like watching as...

It introduces what you are watching happen. This is a very common pattern after verbs of seeing, hearing, or watching:

• Patrzę, jak dzieci się bawią = I’m watching the children play
• Słyszałem, jak wszedł = I heard him come in

So jak does not mean like here.

Because the preposition z meaning from / out of takes the genitive.

The noun is:

• ziemia = earth, ground, soil

Its genitive singular is:

• ziemi

So:

• z ziemi = from the ground / out of the soil

This is worth remembering because z can also mean with, and then it usually takes a different case:

• z ziemi = from the ground
• z przyjacielem = with a friend

Same preposition, different meaning, different case.

Because this part of the sentence needs a conjugated verb, not an infinitive.

• wychodzić = to come out / to go out
• wychodzą = they come out / they are coming out

The subject is pierwsze rośliny, which is plural, so the verb is also plural:

• pierwsze rośliny wychodzą = the first plants come out

Also, Polish present tense of an imperfective verb can often mean either:

• come out
• are coming out

depending on context.

It is nominative plural, because it is the subject of wychodzą.

• roślina = plant
• rośliny = plants
• pierwsze = first

The adjective agrees with the noun in gender, number, and case, so:

• pierwsze rośliny = the first plants

This is the group doing the action of wychodzą.

Because Polish has no articles like English a and the.

So pierwsze rośliny can mean:

• first plants
• the first plants

The context tells you which meaning is intended. In this sentence, English naturally uses the first plants, but Polish does not need any extra word for that.

Yes, you could. Polish word order is much more flexible than English word order.

All of these are possible:

• jak z ziemi wychodzą pierwsze rośliny
• jak pierwsze rośliny wychodzą z ziemi

The basic meaning stays the same, but the emphasis changes a little.

The original version puts z ziemi early, which highlights the image of plants emerging out of the soil. That sounds very natural in descriptive Polish.

Because the sentence talks about:

• general likes and dislikes
• an ongoing or repeated process

In Polish, that usually calls for imperfective verbs.

• usuwać = to remove, in a general/repeated sense
• patrzeć = to watch/look
• wychodzić = to be coming out / to come out as a process

If you used perfective verbs, the meaning would shift toward a single completed event:

• usunąć = remove completely, one time
• wyjść = come out, one completed event

With lubić, Polish normally prefers the imperfective when you mean I like doing X in general.