This is the 5860th most frequent Russian word.
рассаду
"Рассада" in English means "seedlings."
Here, 'рассаду' (seedlings in the accusative case) is used to describe purchased young tomato plants.
Я купил рассаду помидоров на рынке.
I bought tomato seedlings at the market.
In this sentence, 'рассада' (seedling in the nominative case) describes the general state of the young plants.
Эта рассада уже готова к высадке.
This seedling is already ready for planting.
In this sentence, 'рассаду' (seedlings in the accusative case) refers to young plants that are being prepared for transplantation.