Holly Plant Calculator App is a comprehensive mobile application designed for gardening enthusiasts and horticulturists who cultivate holly plants (Ilex species). This intuitive tool provides specialized calculators and care guides to optimize the growth and maintenance of holly plants.

Key Features:

1. Watering Calculator:
- Determines optimal watering amounts based on plant size, pot diameter, temperature and sunlight exposure
- Provides personalized watering schedules

2. Fertilizer Calculator:
- Calculates precise fertilizer requirements considering plant age, foliage density, soil type and fertilizer formula
- Offers seasonal application recommendations

3. Spacing Planner:
- Recommends ideal planting distances for different holly varieties
- Calculates number of plants needed for privacy screens or ornamental arrangements

4. Growth Predictor:
- Projects future plant size based on current measurements and growing conditions
- Tracks growth history for reference

5. Comprehensive Plant Guide:
- Detailed information about holly plant characteristics
- Seasonal care instructions
- Troubleshooting for common issues