Houseplants growing inside tend to be in dim lights and low humidity conditions, which is not how plants typically grow. So you can take your plants outside during the nice parts of the year.
Plants have a natural wax on them, but when in dim light the wax decreases. Slowly acclimate your plants to outside conditions so that wax builds back up. Start off by putting your plants in a shady area outside on cool days around 55 degrees. Over a period of about two weeks you can gradually move them to more sunny areas.
Also, monitor water to make sure your plant doesn't dry out. You can dig a hole and put your pot in it and cover with mulch. This will help prevent your plant from drying out so fast. Plants in smaller containers tend to dry out faster.