Wondering about succulent fertilizer? But, the right fertilizer every few months can drastically change how succulents thrive. You will notice this more frequently in summer so make sure to check every few days. Although, you should repot it every year or once in two years to offer more nutrients promoting healthy growth. Although plants can thrive all year, animals like dogs and cats need to be watered only in extreme heat. Keep your plants protected if you live near extreme heats.