As the summer heat starts to wane in August, many gardeners may feel tempted to put their tools away for the season. However, August actually presents a fantastic opportunity to plant a variety of flowers, herbs, vegetables, and landscape plants that thrive in the remaining warm days and cooler nights.

Depending on your USDA zone, you can successfully sow seeds and transplant young plants that will flourish right up until frost. This guide will provide detailed look on what to plant in August, offering insights into the optimum conditions for each plant.

Vegetables To Plant

August is prime time for sowing fall crops. Depending on the USDA planting zones, you can introduce a diverse selection of vegetables that will thrive in the remaining warm days. Here are ten excellent options:

Kale

Kale is a hardy green that thrives in cooler temperatures. In USDA zones 3-7, you can plant kale seeds directly in the ground until mid-August. This leafy green can tolerate temperatures down to 20°F, making it an excellent choice for fall harvests. You can enjoy multiple cuttings from the same plant, as kale leaves continue growing even after harvesting. Plan to sow seeds every two weeks for a continuous harvest until frost.

Spinach

Spinach is another cool-weather favorite that can be sown in August, particularly in USDA zones 4-7. The seeds should be sown about 4 to 6 weeks before your average first fall frost. Spinach enjoys moderate temperatures and will thrive in soil temperatures around 60°F. If you plant too late, the seedlings might bolt, so aim to harvest by mid-September.

Radishes

Radishes are one of the fastest-growing crops and can be planted from USDA zones 3 to 9 throughout August. Radishes can mature in as little as three weeks, making them a perfect option for late summer gardeners. You can sow seeds every couple of weeks for a continuous supply. Radishes prefer cool temperatures and can be harvested until the ground freezes over.

Broccoli

Broccoli does exceptionally well in cooler weather, making it suitable for planting in August in USDA zones 3-8. Start seeds indoors in mid-July and transplant seedlings into your garden by early August. Broccoli thrives in temperatures between 60°F and 70°F, and you will typically reap your harvest 60-90 days post-planting. Broccoli’s flavor actually improves after exposure to frost, making a late fall harvest particularly desirable.

Carrots

Carrots can be directly sown into the ground in August across USDA zones 3-6. They germinate best at soil temperatures between 55°F to 75°F. Plant carrot seeds roughly one-fourth to one-half inch deep, and consider adding a mulch layer to keep the soil moist and cool. Carrots can be harvested into winter if your climate isn’t too harsh, providing a nutrient-rich addition to many winter meals.

Beets

Beets are versatile root vegetables that appreciate the cooler air of late summer. In USDA zones 3-7, sow beet seeds in early August to enjoy a fall harvest. They thrive in soil temperatures around 50°F to 85°F and can withstand light frosts. The greens of the beet are also edible, allowing you to enjoy two crops from a single planting.

Swiss Chard

Swiss chard, with its vibrant stems and dark leafy greens, flourishes in August plantings, especially in zones 3-9. This leafy green prefers cool temperatures, producing the best yields in fall. Seeds can be sown directly or transplants can be placed in the garden starting in early-August. With a little care, Swiss chard can yield a continuous harvest, and it is known for its ability to withstand light frosts.

Peas

Peas can be planted in August in some USDA zones (especially 6-9). Plant them about 8-10 weeks before your expected frost. Peas thrive in cooler temperatures, and while hot summer days can impede their growth, the cooler nights of August will encourage sweet, tender peas. Additionally, they offer a great way to enrich your soil through nitrogen fixation.

Lettuce

Lettuce can be planted in August across USDA zones 4-9. Its fast growth—ranging from 30 to 60 days to maturity—allows for multiple plantings within the month. Lettuce prefers cooler weather; thus, late summer is ideal. Choose heat-tolerant varieties such as ‘Butterhead’ or ‘Romaine’ to reduce the risk of bolting. For continuous harvest, plant seeds every two weeks.

Turnips

Turnips are an excellent addition to late summer gardens, particularly in USDA zones 3-7. They mature quickly, usually between 30-70 days, depending on the variety. August plantings yield crisp, sweet roots that can be harvested in fall or winter if the climate permits. Turnips can also withstand frost, which enhances their flavor and texture.

Flowers To Plant

While many summer flowers start to fade, August is a stellar time to plant fall-blooming varieties. The following flowers can provide continued color in your garden, as well as the opportunity to sow seeds for next spring’s blooms.

Chrysanthemums

Chrysanthemums, or mums, are synonymous with fall blooms. These hardy flowers can be planted in August in USDA zones 4-9. They prefer well-drained soil and full sun, thriving in temperatures around 65°F to 70°F. Mums bring a vibrant touch to any garden and can survive into early winter, providing color when many other plants are gone.

Asters

Asters produce stunning purple, blue, and white blooms and are well-suited for August planting in zones 3-8. They flourish in cool fall temperatures and can tolerate light frost, revealing their full beauty when the weather cools down. Sow seeds directly in the garden in early August for a late-summer and fall display.

Pansies

Pansies offer delightful colors and can be planted in zones 3-9 throughout August. These resilient flowers thrive in cooler weather and can withstand light frosts, making them perfect for fall gardens. For optimal growth, plant them in well-drained soil with plenty of sunlight. Pansies can also bloom again in spring, giving you double-duty from your planting.

Snapdragons

Snapdragons are versatile flowers that thrive in cooler temperatures, making them ideal for planting in August in USDA zones 4-9. Planting them mid to late August allows them to establish roots before the first frost, resulting in vibrant blooms in the fall and again in spring. Snapdragons prefer full sun and can add height and interest to your garden.

Black-Eyed Susans

These cheerful flowers are perfect for late summer planting in zones 3-9. Black-eyed Susans thrive in a variety of soil types and can handle less-than-ideal conditions, making them a hardy addition to any garden. Plant them in August for a stunning mix of yellow flowers and green foliage that persists into fall.

Sedums

Sedums are succulent plants that flourish in sunny, well-drained areas and can be planted in August in zones 3-9. These drought-tolerant flowers can handle poor soil, making them excellent for rock gardens or borders. Their unique shapes and colors lend a charming addition to gardens, providing texture and interest even in the fall months.

Zinnias

Zinnias can be sown directly into garden beds or containers in August across zones 3-9. These colorful blooms offer a variety of shapes and heights, making them perfect for creating vibrant displays. They flourish in full sun, bloom quickly, and attract pollinators, adding life to your garden space.

Marigolds

Marigolds are flowers that thrive in warm weather and can be planted in August in zones 3-10. They bloom continuously, creating vibrant blankets of color while also serving as pest deterrents in your garden. Ideal for beginner gardeners, marigolds require minimal maintenance and can continue to bloom until frost.

Calendula

Calendula brings brightness to any garden and can be started in August in USDA zones 4-9. These cheerful flowers prefer well-drained soil and thrive in cooler temperatures. They bloom throughout the late summer and into fall, providing color while attracting beneficial insects.

Cosmos

Cosmos are easy-care annual flowers that flourish in warm, sunny conditions and can be seeded in August in zones 3-9. Their feathery foliage and vibrant flowers add movement and charm to a garden. With a sowing date in early August, you can enjoy their soft blooms right up until the first frost.

Herbs To Plant

August is a fantastic month for planting a variety of herbs that can flourish even late in the season. Here’s a detailed look at some of the best herbs to plant during this month:

Basil

Basil is best planted in late summer, particularly in USDA zones 6-10. Seeds can be sown directly in your garden or in pots, allowing you to enjoy fresh basil for culinary uses. Basil thrives in warm conditions, preferring soils warmed to around 70°F, and offers a robust flavor that elevates many dishes.

Cilantro

Cilantro is a cool-weather herb that can be planted in August in zones 3-9. You can sow seeds directly in the ground about 2 weeks before the last average frost and enjoy leaves ready to harvest in a short time. Cilantro offers a unique flavor profile for both cooking and garnishing, and it attracts beneficial insects to your garden.

Chives

Chives are hardy perennial herbs well-suited for planting in August across zones 3-9. They thrive in well-drained soil and full sun, growing rapidly in cooler temperatures. One of the great aspects of chives is that you will have fresh herbs available year after year, as they will return annually to enhance your culinary creations.

Oregano

Oregano is a warm-weather herb that can be planted in August in zones 5-10. This perennial herb thrives best in sunny, dry conditions, producing fragrant leaves prized in many cuisines. Once established, oregano is drought-tolerant and can continue to grow for years with little maintenance.

Thyme

Thyme is a hardy perennial that can be planted in August in USDA zones 4-9. It flourishes in well-drained soil and in sunny locations, producing aromatic leaves that can be harvested throughout the season. With a low moisture requirement, thyme is a perfect candidate for drier areas in your garden.

Dill

Dill is a cool-season herb that can be sown in August across zones 3-9 for a fall harvest. This herb prefers well-drained soil and full sunlight. Dill grows quickly and provides fragrant leaves and seeds for culinary use, adding flavor to dishes while attracting beneficial insects.

Parsley

Parsley can be planted in August in zones 4-9, where it thrives in full sun to partial shade. This biennial herb is easy to grow and can be harvested continually, enhancing your dishes with fresh flavor. Parsley is also an excellent companion plant, benefiting other crops in your garden.

Mint

Mint is a perennial herb that can be planted in August across USDA zones 3-10. It is crucial to contain mint, as it tends to spread. Sowing it in pots or designated areas will allow its robust flavor to flourish while preventing it from overwhelming other plants. Mint thrives in a variety of conditions and can be harvested throughout the season.

Sage

Sage is well-suited for planting in August in USDA zones 4-9. It prefers warm, sunny conditions and well-drained soil. This flavorful herb can tolerate light frost, enhancing its resilience. Once established, sage is a low-maintenance plant that adds a distinctive aromatic flavor to culinary dishes.

Fennel

Fennel is a unique herb that can be planted in August in zones 6-9. It prefers cool conditions and well-drained soil, with the bulb forming beneath the surface. The entire plant is edible and can be harvested in various ways, from its flavorful fronds to the crunchy stems.

Landscape Plants To Plant

August is a suitable month for planting certain landscape plants that will enhance your garden and landscape. Depending on the USDA zone, here are ten landscape plants that thrive when planted in August:

Perennials

Perennials are one of the best options for August planting. Many perennials can be moved or divided this month, enhancing your garden without the risks of frost. Typical choices include daylilies, hostas, and coneflowers.

Ornamental Grasses

Ornamental grasses can be planted in August in USDA zones 4-9. These hardy plants add texture and movement to your landscape. Varieties like Miscanthus, Panicum, and Schizachyrium offer striking features, and they are generally low-maintenance once established.

Shrubs

August is the perfect time to transplant established shrubs or introduce new ones in USDA zones 4-9. Choose varieties such as hydrangeas or butterfly bushes that can thrive in transitional weather. Start watering consistently to help them establish strong root systems before the colder months arrive.

Trees

August is also a good month for planting trees in regions where summer temperatures remain moderate. Choose deciduous varieties to rely on the late summer rainfall for solid establishment, such as maples or oaks, appropriate to your specific zone.

Roses

August is the first month for many late-summer planted rose varieties across zones 5–9, particularly for those that thrive in warm weather. Choosing heat-tolerant, disease-resistant varieties enhances your chances of a vibrant bloom season into fall.

Boxwoods

Boxwoods can be planted in August in zones 5-9. Their evergreen nature ensures year-round interest in your landscape. These shrubs tolerate harder pruning, making them suitable for low-maintenance designs and hedges.

Hardy Annuals

Plant hardy annuals in August for quick summer color across zones 3-10. Varieties like larkspur and nigella can be directly sown into the garden bed. These provide excellent cut flowers for arrangements and bloom quickly, ensuring vibrant displays even later in the summer.

Native Plants

Native plants are well-adapted to your local climate and can handle late-summer conditions. Plant varieties specific to your zone during August to promote health in local ecosystems, attract pollinators, and require less maintenance once established.

Fruit Trees

Some fruit trees, such as certain apple or cherry varieties in zones 4-8, can be planted in August. Prepare the planting site with nutrient-rich soil and ensure they are watered regularly to encourage healthy root systems.

Landscape Perennials

Finally, consider planting landscape perennials like peonies, echinacea, or salvia. These plants offer beautiful blooms that add structure and aesthetic quality to gardens. Though they will take a while to fill out, planting in August establishes strong roots for exciting spring displays.