The Hawaiian Umbrella can be kept indoors or outside during warm weather. As with any Bonsai, cold temperatures below 10°C / 50°F; can harm the tree. It can be kept in low light, but ultimately for faster growth sunlight is recommended.
Keep soil moist, although tree is very tolerant, moisture is important being careful not to over water or letting the tree completely dry out. In either case it will be very forgiving.
Because of its dense canopy, this tree is susceptible to pests. Although it is not common, in some cases when kept indoors scale can occur. Use a specific oil based insecticide to clear.
Use liquid fertilizer every 2 weeks from spring to autumn and once every two months in winter, depending on fertilizer dose. During summer you can also use slow release pellets.