How to Plant Flowers in Large Planters in 5 Steps

How to Plant Flowers in Large Planters in 5 Steps

A size, and even a shape of a planter, may seem like a very random consideration, but they do impact how you should approach the planting of your flowers. In this article, we will look at how to do it the right way with large planters.

Step 1: Choose the Right Planter

When it comes to planting flowers in large planters, the first and most crucial step is selecting the perfect planter. The right planter can make all the difference in the health and beauty of your blooms. Here's what to keep in mind:

  • Size and depth: Choose a planter that's spacious enough to accommodate your flowers' roots and allow them room to grow. A good rule of thumb is to select a planter that's at least 12 inches deep for most flowering plants. If you're unsure, research the specific requirements of the flowers you want to grow.
  • Drainage: Proper drainage is essential for preventing waterlogged soil and root rot. Ensure your planter has adequate drainage holes at the bottom to allow excess water to escape. If you fall in love with a planter that lacks drainage holes, don't worry – you can usually drill your own or use a liner with built-in drainage.
  • Material: Consider your climate and the needs of your plants when selecting a planter material. For example, terracotta planters are porous and allow for better air circulation, making them ideal for plants that prefer well-draining soil. Plastic planters are lightweight and affordable, perfect for balconies or frequently rearranged spaces. Ceramic and metal planters offer a more decorative touch but may require additional drainage support.

Step 2: Prepare the Planter

Now that you've chosen the perfect planter, it's time to get it ready for your flowers. Proper preparation is key to ensuring your plants thrive in their new home. Here's how to do it:

  • Clean the planter: If you're using a brand new planter, give it a quick rinse to remove any dust or debris. For previously used planters, scrub them thoroughly with soap and water to get rid of any lingering dirt or disease-causing bacteria. A clean planter is a happy planter!
  • Cover the drainage holes: While drainage holes are essential, you don't want your precious soil to escape through them. Cover the holes with a screen or mesh to keep the soil in while allowing water to flow out. You can find pre-cut screens at most garden centers, or create your own using a piece of window screen or landscaping fabric.
  • Add a drainage layer: To further improve drainage and prevent waterlogging, add a layer of gravel or pebbles to the bottom of your planter. This creates a space for excess water to collect away from your plant's roots. Aim for a layer that's about 1-2 inches deep. If you're feeling creative, you can even use colorful glass beads or marbles for a decorative touch.

Step 3: Fill the Planter with Soil

With your planter clean and prepped, it's time to add the most important ingredient: soil! Choosing the right soil is crucial for your flowers' health and growth. Here's what you need to know:

  • Select a high-quality potting mix: Skip the garden soil and opt for a potting mix specifically designed for containers. Potting mixes are lighter, drain better, and provide the ideal balance of nutrients for your flowers. Look for mixes that contain ingredients like peat moss, vermiculite, or perlite, which help with moisture retention and aeration.
  • Fill the planter 2/3 to 3/4 full: Pour the potting mix into your planter, filling it about 2/3 to 3/4 of the way. This leaves room for your flowers and a bit of extra soil to cover their roots. If you're planting particularly tall flowers or those with deep root systems, you may want to fill the planter a bit less to accommodate their size.
  • Moisten the soil: Before planting your flowers, give the soil a little drink. Moisten the potting mix slightly, so it's damp but not soaking wet. This helps the soil settle and makes it easier for your flowers' roots to adjust to their new environment. Think of it like fluffing a pillow before a guest arrives – you want your flowers to feel welcome and comfortable in their new home!

Step 4: Arrange and Plant the Flowers

Now for the fun part – bringing your floral vision to life! Arranging and planting your flowers is like creating a work of art, and with a few simple tips, you'll be a master in no time.

  • Plan your arrangement: Before you start planting, take a moment to envision your desired look. Consider the height, color, and texture of your flowers, and arrange them in a way that creates visual interest. Taller flowers like snapdragons or delphinium work well in the center or back of the planter, while shorter blooms like petunias or pansies are perfect for the edges.
  • Remove the flowers from their pots: Gently squeeze the sides of the nursery pots to loosen the soil, then carefully tip the plants out. If the roots are tightly bound, use your fingers to gently loosen them, allowing them to spread out in their new home.
  • Place the flowers in the planter: Create holes in the soil large enough to accommodate each plant's root ball. Place the flowers in the holes, ensuring they're at the same depth as they were in their original pots. This prevents the stems from being buried too deeply, which can lead to rot.
  • Fill in with potting mix: Once your flowers are in place, fill in around them with additional potting mix, gently pressing down to secure the plants. Be sure to leave a slight depression around each plant to help with water retention.

Step 5: Water and Maintain Your Flowers

Congratulations, you've planted your beautiful flowers in your large planter! Now, it's time to give them the TLC they need to thrive and bloom all season long.

  • Water thoroughly: After planting, give your flowers a deep drink of water, ensuring that the soil is evenly moist but not soggy. Water until you see excess liquid draining from the bottom of the planter. This initial watering helps the roots settle and establishes good contact with the soil.
  • Establish a watering routine: Regularly water your flowers based on their specific needs. Most flowers require about 1 inch of water per week, but this can vary depending on the plant, climate, and planter size. Check the soil moisture with your finger – if the top inch feels dry, it's time to water. Aim to keep the soil consistently moist but not waterlogged, as overwatering can lead to root rot.
  • Fertilize and deadhead: Feed your flowers with a balanced, water-soluble fertilizer every 2-4 weeks to keep them looking their best. Deadheading, or removing spent blooms, is like giving your flowers a haircut – it encourages new growth and keeps your planter looking tidy. Simply pinch or snip off any faded flowers or yellowing leaves to direct the plant's energy into producing more blooms.

What to Consider When Buying a Large Planter

When it comes to creating a stunning floral display in a large planter, choosing the right container is just as important as selecting the perfect blooms. Here are a few key factors to keep in mind when shopping for your dream planter:

  1. Size and depth: Make sure your planter is large enough to accommodate the roots of your chosen flowers. A planter that's too small will stunt your plants' growth, while one that's too deep may lead to overwatering. As a general rule, aim for a planter that's at least 12 inches deep and wide enough to allow your flowers to grow and spread comfortably.
  2. Drainage: Proper drainage is essential for preventing waterlogged soil and root rot. Look for planters with ample drainage holes at the bottom, or be prepared to drill your own if necessary. If you're unsure, err on the side of more drainage rather than less – your flowers will thank you!
  3. Material: From classic terracotta to sleek metal, large planters come in a variety of materials, each with its own benefits. Consider the durability, weight, and aesthetic of each option. For example, ceramic planters are beautiful but heavy, while plastic is lightweight and budget-friendly. If you plan to move your planter around or live in a colder climate, factor in the material's portability and frost resistance.
  4. Style: Your planter should not only house your flowers but also enhance your outdoor or indoor space. Choose a style that complements your existing décor and reflects your personal taste. Whether you prefer a minimalist look or a bold statement piece, there's a planter out there that will perfectly suit your style.
  5. Maintenance: Keep in mind the long-term maintenance of your planter. Some materials, like wood, may require regular sealing or staining, while others, like metal, can rust over time. Opt for planters that are easy to clean and maintain, so you can spend more time enjoying your flowers and less time worrying about upkeep.
Back to blog