September Gardening Guide
As summer wanes and the cool crispness of autumn begins to take over, September is a month full of gardening opportunities. It’s a time to prepare for the changing seasons while still reaping the rewards of your summer garden. Here’s your essential guide for gardening this September.
Planting & Sowing
Spring Bulbs: September is the perfect month to plant spring-flowering bulbs such as tulips, daffodils, crocuses, and hyacinths. Plant them now so they’ll be ready to bloom when the warmer weather arrives. Aim to plant bulbs about 3 times their own depth into well-drained soil.
Autumn Veggies: It's time to sow winter hardy vegetables such as spinach, kale, radishes, and salad greens like rocket and mustard. These will give you a harvest throughout the colder months.
Garlic and Onions: If you like to grow your own garlic, now is the time to plant garlic cloves in well-drained soil. You'll be able to harvest them next summer. You can also plant onion sets and shallots for an early summer harvest.
Perennials: If you’ve been meaning to add some new perennials to your garden, September is a great time to get them in the ground. Perennials such as lavender, phlox, and aster will have time to establish roots before the frost sets in.
Autumn Veggies: It's time to sow winter hardy vegetables such as spinach, kale, radishes, and salad greens like rocket and mustard. These will give you a harvest throughout the colder months.
Garlic and Onions: If you like to grow your own garlic, now is the time to plant garlic cloves in well-drained soil. You'll be able to harvest them next summer. You can also plant onion sets and shallots for an early summer harvest.
Perennials: If you’ve been meaning to add some new perennials to your garden, September is a great time to get them in the ground. Perennials such as lavender, phlox, and aster will have time to establish roots before the frost sets in.
Planting & Sowing
Spring Bulbs: September is the perfect month to plant spring-flowering bulbs such as tulips, daffodils, crocuses, and hyacinths. Plant them now so they’ll be ready to bloom when the warmer weather arrives. Aim to plant bulbs about 3 times their own depth into well-drained soil.
Autumn Veggies: It's time to sow winter hardy vegetables such as spinach, kale, radishes, and salad greens like rocket and mustard. These will give you a harvest throughout the colder months.
Garlic and Onions: If you like to grow your own garlic, now is the time to plant garlic cloves in well-drained soil. You'll be able to harvest them next summer. You can also plant onion sets and shallots for an early summer harvest.
Perennials: If you’ve been meaning to add some new perennials to your garden, September is a great time to get them in the ground. Perennials such as lavender, phlox, and aster will have time to establish roots before the frost sets in.
Autumn Veggies: It's time to sow winter hardy vegetables such as spinach, kale, radishes, and salad greens like rocket and mustard. These will give you a harvest throughout the colder months.
Garlic and Onions: If you like to grow your own garlic, now is the time to plant garlic cloves in well-drained soil. You'll be able to harvest them next summer. You can also plant onion sets and shallots for an early summer harvest.
Perennials: If you’ve been meaning to add some new perennials to your garden, September is a great time to get them in the ground. Perennials such as lavender, phlox, and aster will have time to establish roots before the frost sets in.
Lawn Care
Mow & Feed: Continue mowing your lawn until growth slows down. As the weather cools, it’s a good idea to apply a lawn feed that’s rich in potassium and phosphorus. This will help your grass build strength and resilience for the colder months.
Overseeding: If your lawn has bare patches, overseed with a high-quality grass seed to help the lawn recover and grow lush for the spring.
Aerate: If your lawn is compacted or has heavy foot traffic, use a lawn aerator to help improve drainage and root growth. Aeration also makes room for grass to grow more evenly.
Overseeding: If your lawn has bare patches, overseed with a high-quality grass seed to help the lawn recover and grow lush for the spring.
Aerate: If your lawn is compacted or has heavy foot traffic, use a lawn aerator to help improve drainage and root growth. Aeration also makes room for grass to grow more evenly.
Harvesting
Autumn Fruits: Now is the time to harvest late-season fruits. Pick apples, pears, and plums once they’re fully ripe. Be sure to pick them gently to avoid bruising.
Vegetables: September is a great time for harvesting your summer vegetables, such as tomatoes, courgettes, beans, and sweetcorn. If you have a good crop of pumpkins, now is also the time to start harvesting them.
Herbs: If you’ve been growing herbs, such as basil and oregano, it’s time to harvest them before they begin to fade. Dry them to store for the colder months.
Vegetables: September is a great time for harvesting your summer vegetables, such as tomatoes, courgettes, beans, and sweetcorn. If you have a good crop of pumpkins, now is also the time to start harvesting them.
Herbs: If you’ve been growing herbs, such as basil and oregano, it’s time to harvest them before they begin to fade. Dry them to store for the colder months.
Harvesting
Autumn Fruits: Now is the time to harvest late-season fruits. Pick apples, pears, and plums once they’re fully ripe. Be sure to pick them gently to avoid bruising.
Vegetables: September is a great time for harvesting your summer vegetables, such as tomatoes, courgettes, beans, and sweetcorn. If you have a good crop of pumpkins, now is also the time to start harvesting them.
Herbs: If you’ve been growing herbs, such as basil and oregano, it’s time to harvest them before they begin to fade. Dry them to store for the colder months.
Vegetables: September is a great time for harvesting your summer vegetables, such as tomatoes, courgettes, beans, and sweetcorn. If you have a good crop of pumpkins, now is also the time to start harvesting them.
Herbs: If you’ve been growing herbs, such as basil and oregano, it’s time to harvest them before they begin to fade. Dry them to store for the colder months.
Autumn Cleanup
Clear Fallen Leaves: As the first of the autumn leaves start to fall, rake them up to prevent them from smothering your lawn or garden beds. Use the leaves to create a compost heap or leaf mould to enrich your soil.
Deadheading & Pruning: Continue deadheading spent flowers to encourage a longer blooming period. You can also start light pruning on summer-flowering shrubs like lavender or buddlija to keep them neat and healthy. However, avoid heavy pruning this month as it may encourage new growth that could be damaged by frost.
Protect Tender Plants: As temperatures start to drop, move potted plants inside or to sheltered spots to protect them from frost. You can also start applying frost fleece to delicate plants or use cloches and row covers for early protection.
Deadheading & Pruning: Continue deadheading spent flowers to encourage a longer blooming period. You can also start light pruning on summer-flowering shrubs like lavender or buddlija to keep them neat and healthy. However, avoid heavy pruning this month as it may encourage new growth that could be damaged by frost.
Protect Tender Plants: As temperatures start to drop, move potted plants inside or to sheltered spots to protect them from frost. You can also start applying frost fleece to delicate plants or use cloches and row covers for early protection.
Plant of the Month – Asters
September is the prime month to enjoy the beauty of asters, one of the last flowers to bloom before winter. These hardy perennials are perfect for adding late-season colour to your garden, offering vibrant hues of purple, pink, and white. Asters are also a great choice for pollinator-friendly gardens, as bees and butterflies love them.
Plant of the Month – Asters
September is the prime month to enjoy the beauty of asters, one of the last flowers to bloom before winter. These hardy perennials are perfect for adding late-season colour to your garden, offering vibrant hues of purple, pink, and white. Asters are also a great choice for pollinator-friendly gardens, as bees and butterflies love them.
Preparing for Winter: What to Do Now
Protect Your Soil: Before the heavy rains of autumn, consider adding a green manure like clover or mustard to your garden beds. These crops protect the soil from erosion and improve its quality.
Winter Veggies: Start preparing beds for hardy winter vegetables like cabbage, winter leeks, and brussels sprouts. Make sure the soil is well-prepared and weeded before planting.
Garden Structures: Check and repair any garden structures, such as fences, gates, and trellises, to ensure they’re secure for winter weather. Now is also a good time to clean out your greenhouse or shed, ensuring everything is in good shape for the colder months.
Winter Veggies: Start preparing beds for hardy winter vegetables like cabbage, winter leeks, and brussels sprouts. Make sure the soil is well-prepared and weeded before planting.
Garden Structures: Check and repair any garden structures, such as fences, gates, and trellises, to ensure they’re secure for winter weather. Now is also a good time to clean out your greenhouse or shed, ensuring everything is in good shape for the colder months.
Seasonal Garden Decor
Autumn Colour: September marks the start of autumn’s vibrant foliage. Now is the time to plant autumn chrysanthemums, heathers, and grasses to add fall colour and texture to your garden. Consider adding ornamental cabbages and kale for added interest through the colder months.
Pumpkin Displays: If you love to get festive with your garden decor, pumpkins are always a popular choice. Set up some lovely displays around the garden entrance or on your porch. Why not try planting pumpkins in your garden next year?
Pumpkin Displays: If you love to get festive with your garden decor, pumpkins are always a popular choice. Set up some lovely displays around the garden entrance or on your porch. Why not try planting pumpkins in your garden next year?
Seasonal Garden Decor
Autumn Colour: September marks the start of autumn’s vibrant foliage. Now is the time to plant autumn chrysanthemums, heathers, and grasses to add fall colour and texture to your garden. Consider adding ornamental cabbages and kale for added interest through the colder months.
Pumpkin Displays: If you love to get festive with your garden decor, pumpkins are always a popular choice. Set up some lovely displays around the garden entrance or on your porch. Why not try planting pumpkins in your garden next year?
Pumpkin Displays: If you love to get festive with your garden decor, pumpkins are always a popular choice. Set up some lovely displays around the garden entrance or on your porch. Why not try planting pumpkins in your garden next year?
September Gardening Tip of the Month:
Plan Ahead for Next Spring – As the weather cools, now is the time to think about next spring’s garden. Start by sketching out your garden design, and make notes of any plants or features you’d like to add. Think about companion planting for the coming growing season and research which vegetables and flowers work well together.
Final Thoughts
September is a month of transition in the UK garden, where you can still enjoy the late-season harvest while getting your garden ready for the colder months ahead. From planting bulbs to tidying up your outdoor spaces, there’s a lot to do. Embrace this season as an opportunity to prepare for an even more beautiful garden come spring!
Final Thoughts
September is a month of transition in the UK garden, where you can still enjoy the late-season harvest while getting your garden ready for the colder months ahead. From planting bulbs to tidying up your outdoor spaces, there’s a lot to do. Embrace this season as an opportunity to prepare for an even more beautiful garden come spring!