1. Insulation: To make your greenhouse more energy-efficient, start with insulation. Insulating your greenhouse will help to retain heat, reduce energy costs and maintain a consistent temperature. You can use polyethylene foam insulation or bubble wrap to insulate walls, windows, and roofs.

2. Automation: Automating your greenhouse can make it more efficient and time-saving. Install temperature sensors and thermostats to monitor and regulate temperature and humidity levels, and timers for water and plant fertilization.

3. Lighting: Artificial lights can be used to supplement sunlight and ensure plants receive sufficient light during winter months or cloudy days. LED grow lights are an excellent option for indoor gardening as they are energy-efficient, long-lasting and imitate natural sunlight.

4. Ventilation: Proper air circulation and ventilation are crucial to maintaining a healthy greenhouse environment. Installing a ventilation system is crucial when keeping the right balance of temperature, reduced risk, and insect prevention.

5. Watering System: A home watering system, including a drip irrigation system, can help water your plants more efficiently and make gardening practically hands-free. You can install a sub-irrigation system or ebb and flow watering system for your plants.

6. Shelving and Planters: Shelving and planters are an essential element of greenhouse design. They provide the necessary support for growing plants and offer space to store pots and other gardening tools.

7. Aesthetic Features: You can add finishing touches to make your greenhouse look cleaner, more stylish, and rustic. Use quality paint to give your greenhouse a fresh finish, add some plants and flowers to your garden to add a splash of color, and decorate your greenhouse with signs, ornaments, or decorative materials.

A well-maintained and stylish greenhouse can make your gardening experience more enjoyable and provide you with fresh fruits, veggies and flowers year-round.