Στο μπαλκόνι έχω ένα λουλούδι σε μεγάλη γλάστρα, και η μαμά μου λέει ότι φαίνεται πολύ όμορφο.

Στο is the common contracted form of σε το.

• σε = in / on / at
• το = the for a neuter singular noun

So:

• στο μπαλκόνι = on the balcony

In modern Greek, σε + the article is very often written as one word:

• σε + το → στο
• σε + τη(ν) → στη(ν)
• σε + τον → στον

So Στο μπαλκόνι literally means on the balcony.

Greek word order is more flexible than English word order.

The sentence could also be:

• Έχω ένα λουλούδι σε μεγάλη γλάστρα στο μπαλκόνι...

But starting with Στο μπαλκόνι puts the location first, giving it a little emphasis, like:

• As for the balcony, I have a flower there...
• or On the balcony, I have...

This kind of fronting is very natural in Greek.

Yes, έχω literally means I have.

In this sentence:

• Στο μπαλκόνι έχω ένα λουλούδι...

the speaker is saying they have / keep / possess a flower on the balcony.

English might also say:

• I have a flower on the balcony
• or There is a flower on the balcony

Greek often uses έχω in cases where English might prefer there is, especially when the speaker is talking about something that belongs to them or is under their care.

Λουλούδι is a neuter noun, so it takes the neuter form of the indefinite article:

• ένας = a/an for masculine nouns
• μία / μια = a/an for feminine nouns
• ένα = a/an for neuter nouns

So:

• ένα λουλούδι = a flower

A useful clue is that many neuter nouns end in -ι, though not all nouns with that ending are handled exactly the same way in every detail.

Both are possible.

• σε μεγάλη γλάστρα = in a large pot
• σε μια μεγάλη γλάστρα = in a large pot / in one large pot

Greek often omits the indefinite article where English would naturally include a/an, especially in prepositional phrases like this.

So σε μεγάλη γλάστρα sounds perfectly natural and idiomatic. Adding μια is also possible, but it can sound a bit more specific or slightly more emphatic depending on context.

Because γλάστρα is a feminine singular noun, and adjectives in Greek must agree with the noun they describe in:

• gender
• number
• case

So:

• μεγάλος = masculine
• μεγάλη = feminine
• μεγάλο = neuter

Since γλάστρα is feminine singular, the adjective must also be feminine singular:

• μεγάλη γλάστρα = large pot

Γλάστρα means flowerpot or plant pot.

So:

• σε μεγάλη γλάστρα = in a large pot

It refers to the container the plant is in, not the plant itself.

Η μαμά μου is the normal way to say my mom.

• η μαμά = the mom
• μου = my / of me

Greek often expresses possession by putting the weak possessive pronoun after the noun:

• η μαμά μου = my mom
• το σπίτι μου = my house
• ο φίλος μου = my friend

You may sometimes see a different word order in poetic, emphatic, or special contexts, but η μαμά μου is the standard everyday form.

That is a normal feature of Greek.

Greek usually keeps the definite article with a possessed noun:

• η μαμά μου = literally something like the mom of me
• but naturally it means my mom

So even though English drops the, Greek normally uses it.

This is very common:

• το βιβλίο μου = my book
• η αδερφή σου = your sister
• ο πατέρας τους = their father

Ότι means that and introduces a clause.

So:

• η μαμά μου λέει ότι...
• my mom says that...

The clause after ότι is:

• φαίνεται πολύ όμορφο

Greek can sometimes omit ότι, especially in informal speech, but using it is completely normal and clear.

Φαίνεται comes from φαίνομαι, which means to appear / to seem / to look.

Here it means:

• it looks
• or it seems

So:

• φαίνεται πολύ όμορφο = it looks very beautiful

This is a very common verb in Greek when talking about appearance:

• Φαίνεται κουρασμένος. = He looks tired.
• Φαίνεται καλό. = It looks good.

The subject is understood from the context: it is ένα λουλούδι.

So the idea is:

• the flower looks very beautiful

Greek often does not repeat the subject if it is already obvious from the previous part of the sentence.

Even though λουλούδι appeared earlier, it is still the thing being described by φαίνεται πολύ όμορφο.

Because όμορφο agrees with λουλούδι, which is neuter singular.

The adjective όμορφος / όμορφη / όμορφο means beautiful.

Its forms are:

• όμορφος = masculine
• όμορφη = feminine
• όμορφο = neuter

Since λουλούδι is neuter:

• το λουλούδι είναι όμορφο
• the flower is beautiful

The same agreement happens after φαίνεται:

• φαίνεται πολύ όμορφο = it looks very beautiful

Here πολύ means very, so it is functioning as an adverb modifying the adjective όμορφο.

• πολύ όμορφο = very beautiful

Do not confuse this with the adjective form πολύς / πολλή / πολύ, which means much / many.

In this sentence, πολύ is invariable because it means very.

Compare:

• πολύ όμορφο = very beautiful
• πολλά λουλούδια = many flowers

Yes. In this sentence, και is simply and:

• ..., και η μαμά μου λέει...
• ..., and my mom says...

It connects the two parts of the sentence.

Yes. Greek allows several natural variations in word order, for example:

• Έχω ένα λουλούδι σε μεγάλη γλάστρα στο μπαλκόνι, και η μαμά μου λέει ότι φαίνεται πολύ όμορφο.
• Στο μπαλκόνι έχω ένα λουλούδι σε μεγάλη γλάστρα και η μαμά μου λέει ότι είναι πολύ όμορφο.

These are slightly different in rhythm or emphasis, but the basic meaning stays the same.

The original sentence is natural and correct; it just puts the location first and then continues smoothly from there.