النعناع مش هيدبل طول ما بنسقيه.

It breaks down like this:

• مش = not
• هـ / حـ = the Egyptian future marker, roughly will
• يدبل = to wilt

So مش هيدبل literally means not will-wilt, i.e. won’t wilt.

A useful point: in Egyptian Arabic, will is usually not a separate word. It is often a prefix attached to the verb.

In Egyptian Arabic, مش is very commonly used to negate future meaning:

• مش هيدبل = it won’t wilt

By contrast, ما...ش is more common with present or past verbs:

• ما بيدبلش = it doesn’t wilt
• ما دبلش = it didn’t wilt

So in this sentence, مش هيدبل is the natural future negation.

هيدبل means he/it will wilt.

The هـ is not part of the basic verb. It is the future marker added to the imperfect verb:

• يدبل = he/it wilts / would wilt
• هيدبل = he/it will wilt

You may also see حيدبل in other spellings. Both represent the same future idea in Egyptian Arabic.

طول ما is a fixed expression meaning:

• as long as
• so long as
• sometimes while

In this sentence, it introduces the condition under which the first part stays true:

• النعناع مش هيدبل طول ما بنسقيه
• The mint won’t wilt as long as we water it

It is best learned as one chunk: طول ما = as long as.

Because after طول ما, Egyptian Arabic normally uses the regular present/imperfect form to express an ongoing or repeated condition.

So:

• بنسقيه = we water it / we’re watering it / we keep watering it

Here the meaning is not a one-time future event, but an ongoing condition:

• as long as we keep watering it

Using هنسقيه would focus more on a future action and is less natural in this kind of general conditional statement.

The بـ is a very common Egyptian marker for the present/habitual tense.

So:

• نسقيه = a bare imperfect form, used in certain structures
• بنسقيه = we water it / we are watering it

In many everyday sentences, بـ helps show that the action is present, ongoing, or habitual.

The ـه is an object pronoun meaning him/it.

So:

• بنسقي = we water
• بنسقيه = we water it

In this sentence, ـه refers back to النعناع.

Because نعناع is grammatically masculine in Arabic, so the pronoun used for it is the masculine form ـه.

That is why you get:

• بنسقيه = we water it

not

• بنسقيها

Even for objects and plants, Arabic nouns still have grammatical gender.

Because Egyptian Arabic very often uses subject-first order, especially when the speaker is talking about a known topic.

So:

• النعناع مش هيدبل... = The mint won’t wilt...

This feels natural as a statement about the mint.

Arabic can sometimes use verb-first order too, but subject-first is extremely common in Egyptian everyday speech.

Arabic often uses the definite article الـ in places where English uses a bare noun.

So النعناع can mean:

• the mint in a specific situation
• or simply mint as the thing being discussed

Here it sounds natural because the sentence is talking about the mint as the topic.

Yes. It corresponds to Standard Arabic يذبل meaning to wilt.

In Egyptian Arabic, the ذ sound is usually pronounced like d, and colloquial spelling often reflects that. So يذبل becomes يدبل in everyday Egyptian writing and pronunciation.

So this is a normal Egyptian colloquial form, not a different verb.