Your August Planting Primer
August offers a vital window for planting a diverse range of crops, focusing on those that can mature before the cold sets in or those specifically suited for autumn and winter harvests. It's a strategic time to sow fast-maturing vegetables, establish hardy greens, and get a head start on spring-flowering bulbs.
- Sow hardy greens for autumn harvests.
- Plant bulbs now for spring colour.
- Consider quick-growing vegetables.
- Prepare beds for overwintering crops.
- Choose plants suited to shorter days.
The prevailing conditions in August – often still warm but with decreasing daylight hours – dictate what thrives. Success lies in selecting varieties known for their resilience and speed, or those that benefit from a long, slow cool-down period. This month bridges the gap between summer abundance and the need for reliable crops through winter.
When considering what to plant in August, think about both immediate enjoyment and future rewards. This means a mix of short-season vegetables that can deliver a final harvest before the frost, and more robust plants that will overwinter and provide early produce or blooms come spring.
Vegetables to Sow and Plant in August
August is an opportune time to sow many vegetables, particularly those that mature quickly or are destined for winter consumption. It's also a prime month for planting out young brassicas and other brassicas that have been raised from earlier sowings. Focus on varieties that can withstand cooler temperatures and shorter days.
Hardy Greens for Autumn and Winter
Many leafy greens excel when sown in August. Spinach, rocket (arugula), and lambs lettuce (mache) can be sown now for delicious autumn salads. These are often more bolt-resistant than spring sowings and will produce tender leaves as temperatures begin to drop. Continuous sowing every two weeks will ensure a steady supply.
Kale, a true champion of the winter garden, can still be sown from seed in early August in many regions, or young plants can be transplanted. Its flavour actually improves after a light frost. Similarly, Swiss chard, with its vibrant stems and nutritious leaves, is a robust choice that tolerates cooler weather well.
Root Vegetables with Shorter Seasons
While many root vegetables are best sown earlier, August is suitable for certain fast-maturing types. Radishes sown now will mature rapidly, often in less than a month, providing a peppery crunch. Spring onions, sown in succession, will also grow quickly and offer a mild onion flavour. Turnips can be sown for a late autumn crop, provided you select quick-maturing varieties and ensure consistent moisture.
Carrots of shorter, faster-growing varieties can also be sown in August. Ensure the soil is free of stones to allow for straight root development. These will be ready for harvesting in the autumn and can often be stored through early winter if conditions are right.
Quick-Growing Brassicas and Alliums
This is a key time for planting out young brassica plants, such as broccoli, Brussels sprouts, and cabbage, that were started earlier in the season. Ensure they are well-watered and protected from pests. For direct sowing, fast-growing varieties of pak choi and mustard greens can still be sown for a quick crop.
Leeks, though slower to mature, can still be sown from seed in early August for overwintering. Alternatively, planting out young leeks now will give them time to establish before winter truly takes hold. Their flavour intensifies with cold weather.
When planting out young brassicas, consider using collars around the base of the stem to deter cabbage root fly, a common pest at this time of year.
What Vegetables Can I Plant Now?
Beyond the specific examples, the overarching principle for what vegetables can I plant now in August is to look for varieties with shorter days to maturity or those that are cold-hardy. Peas and beans sown now are less common, as they typically require warmer soil and longer growing periods, but some very fast-maturing bush bean varieties might succeed in milder climates if planted very early in the month. It is generally better to focus on the established hardy greens and root crops.
Flowers to Brighten Your Autumn Garden
August is not just for vegetables; it's also a prime month for sowing or planting flowers that will provide colour and interest during the autumn months and even into winter. This is the time to think about late blooms and preparing beds for spring through bulb planting.
Sow Hardy Annuals and Biennials
Many hardy annuals can be sown directly into the ground in August. These will germinate and establish a root system, overwintering as small plants to flower prolifically the following spring. Examples include poppies (Papaver rhoeas), cornflowers (Centaurea cyanus), and calendula. Sowing them now means they get a good start before the weather turns significantly cold.
Biennials like wallflowers (Erysimum) and forget-me-nots (Myosotis) are often planted out as young plants in August. These will grow through autumn and winter, providing a spectacular display of colour in spring. Ensure they are planted in well-drained soil.
Planting for Late Summer and Autumn Colour
For immediate impact, consider planting out bedding plants or young perennials that are already established. Chrysanthemums, asters, and dahlias are excellent choices for bringing late summer and autumn colour. These will flower from late August through autumn, adding vibrancy to borders and containers.
Ornamental cabbages and kales, with their striking colours and textures, are also perfect for planting in August. They not only look good but are also edible and become sweeter with frost.
Flowers Plant in Autumn: Bulbs for Spring
Perhaps one of the most rewarding aspects of August gardening is planting spring bulbs. This is the ideal time to plant bulbs like tulips, daffodils, hyacinths, crocuses, and alliums. These bulbs need a period of cold stratification over winter to trigger their spring flowering, so planting them now ensures they have enough time to establish roots and prepare for their grand display.
When to plant spring bulbs is a question many gardeners ask, and August is often the earliest practical time in many climates, especially for those needing a longer establishment period. Ensure your soil is well-drained, as bulbs can rot in waterlogged conditions. Planting depth varies by bulb type, but a general rule is to plant them about two to three times their own depth.
Consider creating drifts of bulbs for a naturalistic look, or use them to fill gaps in borders. Grouping different varieties can extend the flowering season from early spring through to late spring.
Containers and Hanging Baskets: August Planting
Containers and hanging baskets offer fantastic opportunities to enjoy colour and fresh produce, even with limited space. August is a prime time to plant both for autumn interest and to get a head start on next spring's displays.
Winter Hanging Basket Plants
When planning winter hanging basket plants, think about hardiness and visual appeal. Many plants that look good in autumn will continue to provide structure and colour throughout winter. Consider plants like miniature heathers, small evergreen shrubs, ornamental kales, and violas. Pansies and violas are particularly good as they can often flower through milder spells and are very cold-tolerant.
Herbs like thyme and rosemary, when grown in pots, can also contribute to a winter display and remain useful for culinary purposes. Ensure good drainage and consider adding some evergreen foliage for year-round interest. Planting these now allows them to establish before the harshest weather arrives.
Autumn Container Displays
For containers, the focus shifts to plants that will deliver immediate impact and continue through autumn. Asters, chrysanthemums, and sedums (stonecrop) are excellent choices. Sedums, in particular, offer architectural interest with their fleshy leaves and late-blooming flower heads that provide winter structure.
Combine flowering plants with foliage plants for a more complex display. Heucheras offer a wonderful range of leaf colours, from deep purple to lime green, and their small flowers can attract pollinators. Dwarf conifers and small ornamental grasses add texture and movement.
Preparing for Spring in Pots
As mentioned with garden beds, August is also the time to plant spring bulbs in pots. Tulips, daffodils, hyacinths, and crocuses all do exceptionally well in containers. You can plant them individually or group them for a spectacular show. For a 'lasagne' effect, layer different types of bulbs with different flowering times, ensuring the longest-season bulbs are at the bottom and early bloomers are near the surface.
Using a good quality potting compost is crucial for container gardening. Ensure pots have adequate drainage holes. For very cold climates, consider using terracotta pots, which can be more susceptible to frost damage, or insulating them with bubble wrap or hessian sacks.
Essential August Planting Considerations
Successfully planting in August requires a strategic approach, taking into account the changing weather patterns and the specific needs of plants. Proper preparation and informed choices are key to a thriving garden as the seasons transition.
Soil Preparation and Watering
August can still be warm and dry, so ensuring your soil is well-prepared and adequately watered is paramount. Incorporate well-rotted compost or manure to improve soil structure and retain moisture. For new sowings, keep the soil consistently moist but not waterlogged, using a fine spray to avoid dislodging seeds.
When planting out young plants, water them thoroughly before and after transplanting to minimise shock. Mulching around plants can help conserve soil moisture and suppress weeds, which continue to compete for resources even as growth slows.
Pest and Disease Management
While some pests and diseases may be less active in August than in peak summer, vigilance is still necessary. Slugs and snails can be particularly troublesome for young seedlings and tender greens. Regularly checking for signs of damage and employing appropriate deterrents or controls is advisable.
Ensure good air circulation around plants, especially in denser plantings, to help prevent fungal diseases. Promptly remove any diseased foliage to stop further spread. For overwintering crops, healthy, well-established plants are more resilient to pests and diseases.
What to Plant Now: A Final Check
As a general rule for what to plant now in August, prioritise plants that can establish quickly, tolerate cooler temperatures, or are specifically suited for autumn and winter. This includes many leafy greens, hardy root vegetables, late-flowering perennials, and the crucial spring-flowering bulbs. Don't forget the potential for late-season harvests from fast-growing crops sown earlier in the summer.
If you're looking for plants to plant in winter uk or winter plants for pots, August is your final sowing window for many items that will overwinter and provide winter structure or early spring colour. For those eager to get a jump on next year, now is the time to get those spring bulbs in the ground.
The gardener's commitment in August is to harvest the present while planting the future.
By carefully selecting what to plant in August, you can ensure your garden continues to offer beauty and sustenance long after summer has waned, transforming the garden into a year-round source of enjoyment.