Will the old roots of bougainvillea sprout?

Yes, life is easy. Bougainvillea will sprout. If carefully cultivated, it will germinate the next spring. In spring, the temperature gets warmer. When the temperature is above 15℃, move it to a place with sunlight. And timely supplement phosphate fertilizer and potash fertilizer. When the basin soil is dry, water it in time. So it will sprout again.