Kad bude manje vruće, uzet ću crijevo i zaliti vrt.

Because in Croatian, after time words such as kad / kada (when), a future situation is often expressed with the present tense of a perfective verb, not with the normal future tense.

So:

• Kad bude manje vruće... = When it gets / is less hot...
• not usually Kad će biti manje vruće... in this kind of sentence

Here bude is from biti (to be), but it is being used in a special future-oriented way inside a subordinate clause.

This is very common in Croatian:

• Kad dođe, nazvat ću te. = When he/she comes, I’ll call you.
• Ako nađe vremena, javit će se. = If he/she finds time, he/she will get in touch.

So even though English often uses a present form after when too, Croatian does it with a different system: very often with a perfective present.

Bude is a form of the verb biti (to be).

In this sentence, it is the 3rd person singular form. Literally, it corresponds to is / becomes / will be, depending on context.

In Kad bude manje vruće, it means something like:

• when it is less hot
• when it gets less hot

So it is not a separate future-tense form like English will be. It is a present-tense form that Croatian uses in a future meaning after kad.

Yes, but only slightly.

• kad = when
• kada = when

Both are correct and standard. Kad is shorter and very common in everyday speech. Kada can sound a bit more formal, neutral, or emphatic depending on context.

So this sentence could also be:

• Kada bude manje vruće, uzet ću crijevo i zaliti vrt.

The meaning stays the same.

Manje vruće means less hot.

Here:

• manje = less
• vruće = hot

But vruće here is not describing a noun directly. It is part of an impersonal weather expression, like:

• Vruće je. = It is hot.
• Hladno je. = It is cold.

In this kind of expression, Croatian uses a neuter singular form like vruće, hladno, toplo.

So:

• bude manje vruće = it becomes less hot / it is less hot

English learners often expect something more literal like less hot weather, but Croatian does not need a noun here.

This is the Croatian future tense, and both uzet ću and ću uzeti are possible, but they behave a bit differently in word order and spelling.

The verb is uzeti (to take).

Future tense is formed with:

• the auxiliary ću
• the infinitive uzeti

You can say:

• Uzet ću crijevo.
• Ja ću uzeti crijevo.

Both mean I will take the hose.

Why uzet ću?

When the infinitive comes before the auxiliary in standard Croatian, infinitives ending in -ti often drop the final -i in writing:

• uzeti + ću → uzet ću
• raditi + ću → radit ću

Why not uzeću?

• uzeću is not standard Croatian spelling.
• It is associated with Serbian-style spelling/forms.
• In standard Croatian, write uzet ću or ću uzeti.

Because Croatian often omits the repeated auxiliary when two infinitives are coordinated.

So:

• uzet ću crijevo i zaliti vrt

literally has one ću, but it applies to both verbs:

• uzet ću = I will take
• (ću) zaliti = I will water

This is very natural. Compare in English:

• I’ll take the hose and water the garden.

You do not need to repeat I’ll before the second verb, and Croatian works similarly here.

You could repeat it for emphasis or style, but normally you would not:

• uzet ću crijevo i zalit ću vrt — possible in some contexts, but less natural here

Both are direct objects, so they are in the accusative case.

• uzet ću crijevo → crijevo is the thing being taken
• zaliti vrt → vrt is the thing being watered

Why do they look the way they do?

crijevo

This is a neuter noun. In the singular, nominative and accusative are the same:

• nominative: crijevo
• accusative: crijevo

vrt

This is a masculine inanimate noun. For masculine inanimate nouns, accusative singular is usually the same as nominative singular:

• nominative: vrt
• accusative: vrt

So even though both are accusative here, their forms do not change visibly.

This is about aspect, which is very important in Croatian.

• zaliti = perfective
• zalijevati = imperfective

Very roughly:

• zaliti focuses on the action as a completed whole: to water
• zalijevati focuses on the process, repetition, or ongoing action: to be watering / to water regularly

In this sentence, the speaker is talking about a one-time future action:

• I’ll take the hose and water the garden

That is why zaliti is natural.

If you used zalijevati, it would suggest a different nuance, such as repeated or ongoing watering.

The same applies to uzeti, which is also perfective: the speaker means one complete action of taking the hose.

Yes. The comma is standard and expected here.

Kad bude manje vruće is a subordinate clause at the beginning of the sentence, and it is followed by the main clause:

• Kad bude manje vruće, / subordinate clause
• uzet ću crijevo i zaliti vrt. / main clause

Croatian normally separates that initial subordinate clause with a comma.

So the punctuation here is correct and natural.

Yes, to some extent. Croatian word order is flexible, but not completely free.

The sentence you have is natural:

• Kad bude manje vruće, uzet ću crijevo i zaliti vrt.

You could also say:

• Uzet ću crijevo i zaliti vrt kad bude manje vruće.

That puts the when-clause at the end instead of the beginning.

You could also say:

• Kad bude manje vruće, ja ću uzeti crijevo i zaliti vrt.

Adding ja gives extra emphasis to I.

What you cannot do freely is ignore clitic placement rules. The auxiliary ću is a clitic, so it tends to appear in the second position of its clause. That is why forms like uzet ću and ja ću uzeti are natural, but some other orders would sound wrong or unnatural.

Yes, crijevo can mean both:

• hose
• intestine / gut

This is normal in Croatian. The exact meaning depends on context.

In this sentence, because of uzet ću crijevo and zaliti vrt, it clearly means garden hose / hose.

So learners should not be surprised if a dictionary gives more than one meaning for crijevo. Context tells you which one is intended.