В феврале я всегда жду весну и покупаю жёлтые цветы для мамы.

Because after в when talking about time (in February), Russian uses the prepositional case.

• февраль = February
• в феврале = in February

This is a very common pattern:

• в январе = in January
• в марте = in March
• в апреле = in April

So в феврале means during February / in February.

Because the verb ждать (to wait for / to expect) normally takes the accusative case.

• dictionary form: весна
• accusative singular: весну

So:

• жду весну = I wait for spring / I look forward to spring

For feminine nouns ending in -а, the accusative singular usually changes to -у:

• мама → маму
• книга → книгу
• весна → весну

Because the preposition для (for) requires the genitive case.

• dictionary form: мама
• genitive singular: мамы

So:

• для мамы = for Mom / for my mother

This happens with many nouns after для:

• для брата = for a brother
• для сестры = for a sister
• для друга = for a friend

Because the adjective must agree with the noun in gender, number, and case.

Here, цветы is plural, so the adjective жёлтые is also plural.

• жёлтый цветок = a yellow flower
• жёлтые цветы = yellow flowers

In this sentence, цветы is the direct object of покупаю, so it is in the accusative plural. But since цветы is inanimate, the accusative plural looks the same as the nominative plural:

• nominative plural: цветы
• accusative plural: цветы

So жёлтые цветы is exactly what you expect here.

They are both first person singular present tense forms, because the subject is я (I).

• ждать → я жду = I wait
• покупать → я покупаю = I buy / I am buying

This sentence describes a habitual action, something the speaker regularly does:

• я всегда жду
• я покупаю

Russian present tense often covers both English simple present and present progressive, depending on context.

This is about aspect.

• покупать = imperfective
• купить = perfective

Here the sentence talks about a repeated / habitual action: every February, the speaker does this. For repeated habits, Russian usually uses the imperfective:

• покупаю = I buy / I am in the habit of buying

If you said куплю, that would usually mean I will buy once, as a completed future action, which does not fit well with always.

So:

• я всегда покупаю = I always buy
• я куплю = I will buy

Yes, Russian often omits subject pronouns when the verb ending already shows who is doing the action.

So both are possible:

• Я всегда жду весну...
• Всегда жду весну...

The form жду already means I wait, and покупаю already means I buy.

Including я is still completely natural. It can make the sentence clearer, smoother, or slightly more personal/emphatic.

Yes, Russian word order is fairly flexible. Всегда means always, and its position can move depending on emphasis.

This version:

• В феврале я всегда жду весну и покупаю жёлтые цветы для мамы.

is natural and neutral.

You could also hear:

• Я всегда в феврале жду весну...
• Всегда в феврале я жду весну...

But these may sound more marked or emphasize a different part of the sentence.

So the chosen word order is just a normal, natural way to present the idea.

Because Russian has no articles.

English says:

• the spring
• yellow flowers
• for my mom

Russian usually just uses the noun itself and lets context show whether something is definite or indefinite:

• весну
• жёлтые цветы
• для мамы

So learners should not look for a direct equivalent of a or the in ordinary Russian sentences.

Grammatically, жду весну literally means I wait for spring. But in natural English, it often feels closer to I look forward to spring or I can’t wait for spring, depending on context.

So ждать can sometimes sound more emotional than plain English wait.

In this sentence, because of всегда and the seasonal context, the feeling is probably:

• Every February I look forward to spring...

even though the Russian verb is still simply ждать.

Yes. Жёлтые is spelled with ё, and that tells you both the pronunciation and the stress.

• жёлтые is pronounced roughly ZHYOL-ty-ye

In printed Russian, ё is sometimes written as е, so you may also see желтые, but it still means the same word. Learners should remember that the correct form is жёлтые.

This matters because ё is always stressed, which helps with pronunciation.