For large outdoor planters, you want plants that can thrive in the container environment and add a significant presence to your space. Here are a few excellent choices:

Trees & Shrubs:

• Dwarf varieties:
  • Japanese Maple: Stunning fall color, can be slow-growing and manageable in a large pot.
  • Boxwood: Evergreen, dense foliage, creates a formal look.
  • Citrus Trees: Lemon, lime, or orange trees can add fragrance and fruit to your patio.
• Flowering Shrubs:
  • Hydrangea: Large, showy blooms come in a variety of colors.
  • Gardenia: Fragrant, glossy leaves, prefers warmer climates.
  • Azalea: Beautiful spring blooms, best in acidic soil.

Perennials:

• Hosta: Shade-loving plants with dramatic foliage.
• Daylilies: Easy to grow, come in a wide range of colors and bloom times.
• Coneflowers: Drought-tolerant, attract butterflies and birds.
• Ornamental Grasses: Add movement and texture to your container.

Tips for Success:

• Choose the right size pot: Ensure the pot is large enough to accommodate the plant’s root system and provide adequate drainage.
• Use high-quality potting mix: A well-draining mix is crucial for container plants.
• Water regularly: Check the soil moisture frequently, especially during hot weather.
• Fertilize appropriately: Use a balanced fertilizer to promote healthy growth.
• Consider the climate: Select plants that are well-suited to your local climate and sunlight conditions.

Remember to research the specific needs of each plant before planting to ensure its success in your large outdoor planter.

I hope this helps! Let me know if you’d like more specific recommendations based on your climate or desired aesthetic.