Best Blooms to Sow: June Flower Planting Guide

As June unfurls its sunny petals, you’re probably itching to get your hands dirty in the garden. It’s the perfect time to plant flowers that’ll bloom throughout the summer, adding a splash of colour to your beds and borders.

Benefits of planting flowers in June

Longer Days and More Sunlight

Planting your flowers in June takes full advantage of the longer daylight hours and increased sunlight that the month provides. Your garden’s floral residents thrive with the extra sunshine as it’s critical to the process of photosynthesis. More sunlight means more energy for growth, which is vital for new plants as they put down roots and shoot up stems. Remember, the more hours of daylight there is, the more time plants have to grow, and the lusher your garden will look.

Optimal Soil Temperature

By June, the soil has warmed up enough to create an ideal growing environment for most flowers. Cold snaps are less likely, and the steady soil temperature helps seeds germinate more effectively and cuttings establish quicker. You’re not just planting flowers; you’re giving them a warm cradle to nurture their early growth stages which is crucial for healthy development. Ensure that you’re digging about your garden to assess the soil warmth and texture—it should be neither too cold nor clumpy.

Abundant Rainfall

June often brings periods of rain which help flowers get the water they need during crucial growing periods. While you’ll need to make sure that your garden has good drainage to prevent waterlogging, the typically frequent yet mild showers provide plenty of moisture. This can reduce the need for manual watering and help your flowers to establish a strong root system—it’s nature’s own irrigation system at work. Always keep an eye on the weather forecast to plan your planting days around those welcome rains.

Best flowers to plant in June

June’s beckoning warmth and gentle rains set the stage for your garden’s transformation. Embrace the month’s gifts and sow the seeds of vibrant blossoms that thrive under its tender watch. What follows is a list of the best flowers to handpick for a June planting, each promising to infuse your garden with colour and life.


At the heart of many gardens are roses, timeless in their elegance and variety. In June, your efforts to cultivate these blooms are rewarded with a lush exhibition of colour and scent. Start with bare-root plants or container-grown specimens to establish a rose garden that will become the envy of all who pass by.

  • Choose a spot that bathes in full sunlight.
  • Make sure the soil is well-drained and enriched with organic matter.
  • Plant each rose at a depth where the graft union is slightly below the soil level.


Dahlias offer a spectacle like no other, with their large blossoms and kaleidoscope of hues. They’re tuberous perennials that can lift the spirits of any onlooker and are ideal for those looking to make a bold statement.

  • They prefer a sunny location away from strong winds.
  • Plant the tubers about 10-15 centimetres deep.
  • Don’t water until the shoots appear above ground to prevent tuber rot.


Sunflowers are the titans of June’s gardens, shooting up towards the sky with a sun-seeking vigour. Their towering presence and bright faces encapsulate the spirit of summer.

  • Opt for a spot that receives direct sunlight for most of the day.
  • Provide sturdy support for taller varieties to shield them from strong gusts.
  • Sow seeds directly into the ground at a depth of about 2.5 centimetres.


The soothing fragrance of lavender can turn any garden corner into a haven of tranquility. This hardy perennial does particularly well in June’s caress, under the full sheen of the sun.

  • Ensure well-drained, slightly alkaline soil.
  • Avoid damp, heavy ground to protect against root rot.
  • Space plants about 90 centimetres apart to encourage airflow.


With their fiery blooms and easy-going nature, marigolds are a gardener’s best friend. Their pest-repellent properties are an added bonus, making them as functional as they are fetching.

  • Plant in a location with full sun for the best flower production.
  • They’re not picky about soil but thrive in moderately fertile ground.
  • Keep soil moist but not waterlogged.


Geraniums’ versatility and vibrant colour display make them a cherished choice for any June planting. These sturdy beauties can cope with a bit of neglect, thriving in both beds and containers.

  • Full sun to partial shade will suit them just fine.
  • Well-drained soil is essential.
  • Deadhead spent blooms regularly to encourage new growth.

Sweet Peas

Sweet peas intoxicate with their delicate flowers and sweet fragrance, climbing with enthusiasm if given the proper support. June is the perfect month to appreciate their ascent.

  • Choose a cool, moist, well-drained spot.
  • Provide plenty of organic material at planting time.
  • Install trellises or stakes to support their climbing habit.

Immerse yourself in the joy of planting these excellent June flowers. Watch in anticipation as your efforts are rewarded with a garden that bursts into a lively palette of colours, fragrances, and forms. Embrace the season’s potential and let your garden elevate its voice, celebrating the myriad of life June so kindly encourages.

Tips for planting flowers in June

Choose Healthy and Vigorous Plants

When you’re selecting flowers to plant this June, make sure you pick the healthiest and most vigorous plants from the nursery. Look for plants with lush, green foliage and no signs of wilting or disease. Healthy roots are also a must – they should be white or light coloured and spread out, not tightly coiled or brown. If you start with robust plants, you’ll have a head start, as they’re better equipped to thrive in your garden.

Prepare the Soil Properly

Before getting those flowers in the ground, take the time to prepare the soil. Good soil preparation is key to your plants’ success. Begin by clearing the planting area of weeds and debris. Then, break up the soil with a fork or tiller to a depth of about 30-40 cm to ensure good root penetration. It’s a great idea to enrich the soil by adding organic matter like well-rotted manure or compost. Testing your soil pH can also inform you if any adjustments are needed to suit the specific flowers you’re planting.

Watering and Fertilizing

Watering your newly planted flowers correctly sets them up for success. They’ll need to be kept moist, especially in the weeks after planting. Avoid over-watering, as this can lead to root rot. An early morning watering routine can reduce evaporation and give your plants a great start to their day. As for fertilizing, applying a balanced, slow-release fertilizer gives your flowers the nutrients they need to grow strong and healthy. Always follow the instructions on the fertilizer’s packaging for the best results.

Protect Your Plants from Pests and Diseases

Finally, keep an eye out for pests and diseases that could wreak havoc in your June flower beds. Practice regular monitoring and adopt preventive measures like mulching and choosing disease-resistant plant varieties. If you do notice any pests or signs of disease, act swiftly using appropriate organic or chemical treatments. Remember to use these treatments responsibly to avoid any potential negative impacts on your garden’s ecosystem.

By following these tips, your June-planted flowers stand a much better chance of flourishing. Whether you’ve chosen sun-loving sunflowers or fragrant sweet peas, each step you take ensures that you’ll be able to enjoy their beauty all through the growing season.


So there you have it! Armed with these tips you’re all set to get your hands dirty and your garden blooming. Remember it’s all about starting with the right plants giving them the love they need and keeping those pesky intruders at bay. With a bit of care and attention your June flower planting can transform your garden into a vibrant oasis. Happy gardening!