This is the 5860th most frequent Russian word.
рассаду
"Рассада" in English means "seedlings."
In this sentence, 'рассаду' (seedlings in the accusative case) refers to young plants that are being prepared for transplantation.
Подготовьте рассаду для высадки в открытый грунт.
Prepare the seedlings for planting in the open ground.
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.