MOST IMPORTANT: Because your wine bottle garden does not allow for draingage, it is very important not to leave yours where it can catch direct rain fall. Your succulent will love being outside as long as it's in a sunny area where it will not drown!
Succulents prefer bright light, such as found on a south-facing window. Watch the leaves for indications that the light level is correct. Some species will scorch if suddenly exposed to direct sunlight. The leaves will turn brown or white as the plant bleaches out and the soft tissues are destroyed. Alternatively, an underlit succulent will begin to stretch, with an elongated stem and widely spaced leaves. This condition is known as etoliation. The solution is to provide better light and prune the plant back to its original shape. Many kinds of succulents will thrive outdoors in the summer.
Succulents are much more cold-tolerant than many people assume. As in the desert, where there is often a marked contrast between night and day, succulents thrive in colder nights, down to even 40°F. Ideally, succulents prefer daytime temperatures between 70°F and about 85°F and nighttime temperatures between 50°F and 55°F.
Succulents should be watered generously in the summer. The potting mix should be allowed to dry between waterings, but do not underwater. During the winter, when the plants go dormant, cut watering back to once every other month. Overwatering and ensuing plant rot is the single most common cause of plant failure. Be aware, though, that an overwatered succulent might at first plump up and look very healthy. However, the cause of death may have already set in underground, with rot spreading upward from the root system. A succulent should never be allowed to sit in water.
Overwatered plants are soft and discolored. The leaves may be yellow or white and lose their color. A plant in this condition may be beyond repair, but you can still remove it from its pot and inspect the roots. If they are brown and rotted, cut away dead roots and repot into drier potting media, or take a cutting and propagate the parent plant.
Succulents prefer generous water during the growing season (spring and summer). An underwatered plant will first stop growing, then begin to shed leaves. Alternatively, the plant may develop brown spots on the leaves.
During the summer growing season, fertilizer as you would with other houseplants. Stop fertilizing entirely during the winter.