Indoor aloe vera plant size ranges from 1 to 2 feet (30 to 60cm) tall for most home grown plants. Some aloe can reach up to 3 feet (90cm) in perfect conditions. The size your plant reaches depends on pot size, light, and age.
I've tracked my oldest aloe from a small pup to its current size over four years now. It started at just 3 inches (8cm) tall and now stands about 18 inches (46cm) with leaves spreading nearly 2 feet (60cm) wide. Growth was slow at first but sped up after year two.
How tall aloe grows connects to the pot you keep it in. Small containers limit root growth and keep plants compact. If you want a bigger aloe, repot into a slightly larger container every two years to give roots room to spread.
NC State Extension notes that individual leaves can reach up to 18 inches (46cm) long on mature plants. Most indoor aloe takes about three years to reach full aloe vera mature size. Plants in ideal conditions grow faster than those in dim spots.
The aloe plant growth rate speeds up with better light and proper care. Plants near bright windows grow faster than those in dim corners. Expect to see one or two new leaves forming from the center each month during spring and summer.
I noticed my aloe started making pups around year three when it reached about 12 inches (30cm) tall. These baby plants grow at the base of the mother plant. You can leave them attached or separate them into their own pots.
Aloe spreads outward as much as it grows upward. A mature plant might be 18 inches (46cm) tall but 24 inches (60cm) wide from leaf tip to leaf tip. Plan for this spread when choosing where to place your plant.
You can keep your aloe smaller by leaving it in a compact pot and limiting root space. Some growers prefer a tidy 6 inch (15cm) plant over a sprawling specimen. The plant stays healthy either way as long as basic care needs are met.
If you want the biggest possible aloe, give it plenty of light, a roomy pot, and regular care. Repot every two years into a container 2 inches (5cm) larger than the current one. Your plant will reward you with impressive growth over time.
Read the full article: Aloe Vera Plant Care Guide for Beginners