Moja unuka voli crtati cvijeće u parku.

Because unuka is a feminine singular noun, and the possessive word moj (my) has to agree with it.

So:

• moj = masculine singular
• moja = feminine singular
• moje = neuter singular

Since unuka means granddaughter, the correct form is moja unuka.

Unuka means granddaughter.

Related forms:

• unuk = grandson
• unuka = granddaughter

So moja unuka is my granddaughter.

Croatian often uses voljeti (to like / to love) plus an infinitive to say that someone likes doing something.

So:

• voli = likes
• crtati = to draw

Together, voli crtati means likes to draw or likes drawing.

This is very similar to English:

• She likes to draw
• She likes drawing

Crtati is the infinitive form, meaning to draw.

After voli, Croatian normally uses the infinitive:

• voli crtati = likes to draw

By contrast, crta is a present-tense form:

• crta = he/she draws or is drawing

So:

• Moja unuka voli crtati = My granddaughter likes to draw
• Moja unuka crta = My granddaughter is drawing / draws

This is a very common learner question. Cvijeće is a collective noun in Croatian. It refers to flowers as a group, but grammatically it behaves like a singular neuter noun.

That is why it appears as cvijeće, not as a regular plural noun.

So in this sentence:

• crtati cvijeće = to draw flowers / to draw flower(s)

Even though the English meaning is plural, Croatian treats cvijeće as a singular mass/collective idea.

Here cvijeće is in the accusative case, because it is the direct object of crtati.

She is drawing what?

• cvijeće

A useful detail: for many neuter singular nouns, the nominative and accusative forms are the same. So cvijeće looks the same in both cases.

Because u parku expresses location: in the park.

With u, Croatian uses:

• locative for being in / at a place
• accusative for movement into a place

So:

• u parku = in the park (location)
• u park = into the park (direction/movement)

In your sentence, the granddaughter is drawing in the park, so the locative is needed:

• park → parku

Parku is the locative singular form of park.

The base form is:

• park = park

After u meaning in, it changes to locative:

• u parku = in the park

This is a standard pattern for many masculine nouns.

Croatian does not have articles like English a and the.

So Croatian simply says:

• moja unuka
• cvijeće
• u parku

The exact meaning—whether something is a park, the park, flowers, or the flowers—usually comes from context.

That is why the sentence has no separate word for the in the park.

Yes. Croatian word order is more flexible than English because the grammar endings carry a lot of the meaning.

The neutral, natural order here is:

• Moja unuka voli crtati cvijeće u parku.

But other orders are possible for emphasis, for example:

• U parku moja unuka voli crtati cvijeće.
• Cvijeće moja unuka voli crtati u parku.

These alternatives may sound more marked or emphasize a different part of the sentence. For a learner, the original order is the safest and most natural.

It can mean either, depending on context.

The dictionary form voljeti can mean:

• to like
• to love

In this sentence, voli crtati is naturally understood as likes to draw, not loves to draw in a dramatic sense.

So:

• Moja unuka voli crtati cvijeće = My granddaughter likes drawing flowers

Yes. Crtati is an imperfective verb, which is the normal choice for activities, habits, or general actions like drawing.

So voli crtati means she likes the activity of drawing.

A related perfective verb is often:

• nacrtati = to draw something completely / to finish drawing it

After voli, Croatian usually prefers the imperfective when talking about liking an activity:

• voli crtati = likes drawing

That sounds much more natural than using a perfective verb here.