Već u šest ujutro baka zalijeva vrt.

Već means something like already or as early as in this sentence.

Here it adds the idea that six in the morning is early, so the speaker is emphasizing that grandma starts watering the garden already at six.

So without već, the sentence would still make sense, but it would sound more neutral:

• U šest ujutro baka zalijeva vrt. = Grandma waters the garden at six in the morning.
• Već u šest ujutro baka zalijeva vrt. = Grandma waters the garden already / as early as six in the morning.

Croatian commonly uses u + time to mean at a certain hour.

So:

• u šest = at six
• u osam = at eight
• u podne = at noon

Then ujutro means in the morning, so:

• u šest ujutro = at six in the morning

This is very natural Croatian word order for telling time.

U šest just means at six, without saying whether that is morning or evening.

U šest ujutro specifies that it is six in the morning.

Compare:

• u šest = at six
• u šest ujutro = at six in the morning
• u šest navečer = at six in the evening

So ujutro removes ambiguity.

Baka is the subject of the sentence, so it is in the nominative case.

The verb zalijeva is something baka does, so baka stays in its basic dictionary form here.

Very roughly:

• baka = grandma, as the subject
• if it were the object, the form could change depending on the sentence

In this sentence:

• baka = the one doing the action

Zalijeva is the 3rd person singular present tense form, agreeing with baka.

So:

• ja zalijevam = I water
• ti zalijevaš = you water
• on/ona zalijeva = he/she waters

Since baka is she, the verb is:

• baka zalijeva = grandma waters / is watering

In Croatian, the subject and verb have to match in person and number.

Because Croatian, like English, often uses the present tense for habitual actions.

So baka zalijeva vrt can mean:

• grandma waters the garden
• grandma is in the habit of watering the garden

It does not have to mean only right now at this exact moment. In many contexts, the present tense can describe a routine.

Here vrt is the direct object of the verb zalijeva.

The verb zalijevati takes an object in the accusative case. For many masculine inanimate nouns, the accusative singular looks the same as the nominative singular.

So:

• nominative: vrt
• accusative: vrt

That is why you do not see a different ending here.

Compare with a masculine animate noun, where the accusative often changes:

• vidim čovjeka = I see the man

But:

• zalijeva vrt = waters the garden

Croatian does not have articles like English a and the.

So Croatian usually just says:

• baka
• vrt

Whether English translates that as grandma, the grandma, a garden, or the garden depends on context.

That is a very common adjustment for English speakers learning Croatian: you have to get used to understanding definiteness without articles.

Yes. Croatian word order is more flexible than English word order because cases show what each noun is doing.

The sentence:

• Već u šest ujutro baka zalijeva vrt.

could be rearranged for emphasis, for example:

• Baka već u šest ujutro zalijeva vrt.
• Vrt baka zalijeva već u šest ujutro.

These versions are not all equally neutral, but they are possible in the right context.

The original order sounds natural and emphasizes the time expression near the beginning, especially with već.

In this sentence, ujutro functions as an adverbial time expression, meaning in the morning.

You can learn it as a fixed expression:

• ujutro = in the morning
• popodne = in the afternoon
• navečer = in the evening

So u šest ujutro is a set phrase meaning at six in the morning.

In standard usage, zalijeva is the present-tense form of the imperfective verb zalijevati.

That matters because Croatian verbs often come in aspect pairs:

• zalijevati = imperfective, focusing on the process, repetition, or habit
• zaliti = perfective, focusing on a completed action

Since this sentence sounds like a regular or ongoing action, the imperfective zalijeva fits very naturally.

So the sentence suggests something like a routine:

• grandma waters the garden at six in the morning

rather than one single completed act.