kanyousyokubutu ga sioreta.

It is read かんようしょくぶつ.

A quick breakdown:

• 観葉 = ornamental leaves / foliage for viewing
• 植物 = plant

So 観葉植物 is the standard word for a houseplant or foliage plant.

が marks 観葉植物 as the subject of the sentence and presents the situation as a straightforward observation:

• 観葉植物がしおれた。 = The houseplant wilted / has wilted.

Using が often sounds like you are noticing or reporting what happened.

If you used は instead:

• 観葉植物はしおれた。

that would sound more like As for the houseplant, it wilted, or it could imply contrast, depending on context.

Very roughly:

• が = neutral description of what happened
• は = topic, often with a contrastive or topical nuance

しおれた is the plain past form of the verb しおれる.

So:

• dictionary form: しおれる
• plain past: しおれた

In this sentence, the past form often corresponds naturally to English wilted or has wilted, depending on context.

しおれる is an ichidan verb.

Its basic forms are:

• dictionary form: しおれる
• negative: しおれない
• past: しおれた
• polite: しおれます
• polite past: しおれました

It is also basically intransitive, meaning the plant itself undergoes the change of state. The sentence is not saying that someone did something to the plant directly; it is saying the plant became wilted.

Yes, it can be written in kanji as 萎れた, from 萎れる.

However, this word is very often written in hiragana in everyday Japanese because the kanji is relatively uncommon and harder to read for many people. So しおれた is completely normal and often preferred in ordinary writing.

By itself, 観葉植物 does not explicitly mark singular or plural. Japanese nouns usually do not change form for number.

So depending on context, it could refer to:

• a houseplant
• houseplants

In this sentence, the most natural interpretation is usually one houseplant, but context is what really decides it.

Japanese does not have articles like a, an, or the.

So 観葉植物がしおれた does not directly tell you whether it is:

• a houseplant wilted
• the houseplant wilted

That is inferred from context. This is very normal in Japanese.

This is a very useful distinction.

• しおれた = wilted, drooped, lost firmness
• 枯れた（かれた） = dried up, withered completely, often died

So if a plant needs water and is drooping, しおれた is a natural choice.

If the plant is fully dead or dried out, 枯れた may be more appropriate.

In other words:

• しおれた can be temporary
• 枯れた often sounds more final

No. This sentence has a subject but no object.

• 観葉植物 = subject
• が = subject marker
• しおれた = verb

Because しおれる is intransitive, the sentence describes what happened to the plant itself. There is no direct object like in English sentences such as Someone watered the plant.

Yes, very often.

If the topic is already clear from context, Japanese might simply say:

• しおれた。

That could mean It wilted or It has wilted, with the listener understanding what it refers to.

Japanese frequently omits subjects and other information when they are obvious from the situation.

A polite version is:

• 観葉植物がしおれました。

The difference is mainly politeness level:

• しおれた = plain / casual
• しおれました = polite

Both mean the same thing, but しおれました is more appropriate in formal conversation, customer-facing speech, or when speaking respectfully.