When to Sow Pumpkin Seeds

Posted by Jessica Mcnamara on

Pumpkins, with their vibrant orange hues and versatility in the kitchen, are a beloved addition to any garden. Whether you're a seasoned gardener or a newbie in the world of gardening, growing your own pumpkins can be a rewarding experience. But knowing when to sow pumpkin seeds is crucial for a successful harvest. In this blog, we'll walk you through the optimal timing, essential steps, and some expert tips to help you cultivate healthy, thriving pumpkin plants in your Marshalls Garden.

Choosing The Right Time

Pumpkins are a warm-weather crop, and they thrive when sown after the last frost date in your region. In most areas, this means planting pumpkin seeds in late spring or early summer. To be more specific, wait until the soil temperature reaches around 21°C, which is typically a few weeks after the last frost.

Soil Preparation

Before you sow your pumpkin seeds, it's important to prepare the soil properly. Pumpkins need well-drained, nutrient-rich soil. Start by loosening the soil to a depth of at least 12 inches and amending it with organic matter, like compost or well-rotted manure. This will provide the essential nutrients your pumpkin plants need to thrive.

When to sow Pumpkins

Seed Selection

Choose high-quality pumpkin seeds from a reputable source, like Marshalls Garden. There are various pumpkin varieties available, so pick the one that suits your garden's space and your culinary preferences. Whether you opt for the classic Jack-o'-Lantern variety or a sweet sugar pumpkin, select seeds that are plump, fresh, and free from any visible damage.

Sowing the Seeds

Plant your pumpkin seeds about 1 inch deep in small hills or mounds. These hills should be spaced about 3-5 feet apart, depending on the pumpkin variety. In each hill, place 2-3 seeds, as not all may germinate. Once the seeds are in place, cover them with soil and water them thoroughly. Keep in mind that pumpkins are known for their sprawling vines, so make sure to provide enough space for them to grow.

 Pumpkin Plant

Proper Care

Maintain your pumpkin patch by providing consistent, even moisture throughout the growing season. While pumpkins are relatively drought-tolerant once established, they benefit from regular watering, especially during dry spells. Use mulch to help retain soil moisture and prevent weeds. Additionally, consider fertilizing your pumpkin plants with a balanced, slow-release fertiliser to ensure they receive the necessary nutrients.

Protect Your Pumpkin Patch

Pumpkin plants are vulnerable to pests and diseases. Keep an eye out for common issues like powdery mildew and squash bugs. To protect your pumpkins, practice good garden hygiene and consider organic pest control methods.


Pumpkins are ready for harvest when they've reached their full color and the skin has hardened. Depending on the variety, this typically occurs in late summer or early fall. Use a sharp knife to cut the pumpkins from the vines, leaving a few inches of stem attached. This stem will help prolong the pumpkin's shelf life.

Growing pumpkins can be a fun and rewarding experience, especially when you know when to sow pumpkin seeds. By following the timing guidelines and essential steps we've discussed in this blog, you can look forward to a bountiful harvest of pumpkins that will not only brighten your garden but also offer delicious culinary possibilities.

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