Glass bowl probably just lined with stones...succulents need a sandy soil and correct amount of water and sun...usually they don't root deeply so no hole in bottom can work in deep pots such as these...succulents usually like infrequent watering but not wet soil

Hi - with all succulents, more drainage is better. This display was on a table located on a covered porch and only got water when I watered. The two ceramic pots were drilled but the glass had no drainage. In general though, I'd recommend good drainage. For the planting in the glass, I just used the 4" plants and lines the glass with beach rocks to pull and water away from the roots.