Sweet Peas: More Than Just a St. Patrick’s Day Tradition for Aussie Gardeners
While many mark St. Patrick’s Day on March 17th with a splash of green, a pint of Guinness, and a good dose of craic, Australian gardeners have a different tradition brewing. For them, this date signifies a key moment for sowing sweet pea seeds, a practice steeped in the belief that planting by sunrise on this day will yield bigger, more fragrant blooms. This charming ritual has firmly cemented St. Patrick’s Day in the gardening calendar for enthusiasts of this delightful climbing plant.
However, Down Under, the timing isn’t quite so rigid. The tradition doesn’t dictate that you must sow your sweet peas on March 17th, nor does it mean you’ve missed your chance if you plant later. In fact, with Australia’s often lingering hot temperatures well into the first month of autumn, waiting for the weather to cool down can actually be a significant advantage for successful sweet pea cultivation.
Marcelle Swanson, product marketing manager at The Diggers Club, explains that while St. Patrick’s Day might not be the universally perfect sowing time across all Australian regions, it serves as a valuable reminder that autumn and spring are indeed ideal seasons for planting sweet peas.
Sowing Your Sweet Peas: Punnets or Direct?
Sweet peas can be sown directly into the garden beds or planted in containers. However, Swanson offers a practical tip: if you’re sowing your seeds during autumn, it’s generally recommended to start them off in punnets first.
This approach is crucial because the ideal soil temperature for germination lies between a comfortable 13 to 18 degrees Celsius. Sweet pea seeds typically take anywhere from 10 to 21 days to sprout. While warmer soils can speed up germination, they also risk producing seedlings that become excessively “leggy” – meaning they grow tall and spindly without developing much strength. Conversely, colder temperatures might prevent the seeds from germinating altogether. By using punnets, gardeners gain greater control over the ambient temperature and soil moisture, ensuring a more consistent and successful start for their young plants.
Germination Boosts and Transplanting Time
Some seasoned gardeners, including Swanson herself, advocate for soaking sweet pea seeds in water for a few hours before sowing. This step can help to kickstart the germination process, giving the seeds a head start. However, if you’re short on time or prefer a simpler approach, you can also pop the seeds straight into their punnets or soil.
Once your seedlings have developed and spring has truly sprung, it’s time for transplanting. For regions that experience frost, it’s essential to wait until the risk of the last frost has passed before moving your young plants outdoors. Generally, sweet pea seedlings are considered ready for transplanting when they have reached the three to four-leaf stage. This is also the opportune moment to “pinch” your seedlings. This involves carefully removing the top pair of leaves, a simple technique that encourages the plant to grow bushier and ultimately produce more flowers.
Providing Support for Climbing Beauties
Sweet peas are naturally climbers, and as such, they require a structure to support their growth. It’s vital to consider and install this support system before you sow your seeds or transplant your seedlings. Sweet peas readily attach their tendrils to a variety of open structures, from simple wire fencing and traditional cane tepees to more elaborate arbours and latticework. Setting up the support early is crucial to prevent any accidental damage to the delicate young seedlings as they begin to establish themselves.
A Symphony of Colour and Fragrance
The appeal of sweet peas extends far beyond their traditional sowing date. These charming blooms are a feast for the eyes, whether cascading over a garden fence or adding a touch of natural beauty to a posy in a vase. Their colour palette is wonderfully diverse, ranging from classic purples, delicate pinks, and pristine whites to vibrant reds. Many varieties also boast unique marbled looks or petals adorned with multiple colours, adding an extra layer of visual interest.
So, whether you’re embracing the St. Patrick’s Day tradition or simply admiring their beauty, sow your sweet peas now if you’re hoping for a spectacular floral display in spring. Alternatively, you can wait until spring and enjoy these captivating flowers gracing your garden throughout the summer months. And for the true sweet pea aficionados, why not do both? Embrace the opportunity to enjoy these blooms across two seasons.
