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Best Vegetables to Plant in Late Summer

Maximizing Your Late Summer Vegetable Garden

Late summer is an exciting time for gardeners as it presents the perfect opportunity to extend your harvest and enjoy an abundant yield of fresh vegetables. By taking advantage of the warm weather and longer days, you can grow a variety of delicious crops that thrive in the late summer garden. Whether you're a seasoned gardener or just starting out, this guide will help you make the most of this fruitful time of year.

Taking Advantage of the Perfect Time to Start a Second Crop

Late summer gardening provides an ideal window for planting a second crop that will flourish well into the fall and even early winter. It's a chance to maximize your growing season and continue enjoying fresh produce long after the summer heat subsides. By planning strategically and choosing the right vegetables for this time of year, you can enjoy a bountiful harvest that extends well into the cooler months.

In the following sections, we'll explore the best vegetables to grow in late summer, offering tips on when and how to plant them, as well as essential care guidelines to ensure your garden thrives. Whether you have a small plot or spacious garden beds, there's something for everyone to cultivate during this time of year. So, let's jump right in and discover the secrets to a successful late summer vegetable garden!

vegetable harvest of cabbage, carrots, greens, squash
Vegetable Harvest/Photo Credit: Alexander Schimmeck/Unsplash

Best Time to Plant Late Summer Vegetables

Understanding the Climate and Frost Dates

Late summer gardening requires a good understanding of your local climate and frost dates. While some regions may experience cooler temperatures and frost earlier in the season, others may enjoy a longer period of warm weather well into the fall. By knowing your specific climate patterns, you can make informed decisions about when to plant and which vegetables to choose.

  1. Late Summer versus Early Fall Gardening

Late summer gardening typically refers to the period from late August to early September when the summer heat begins to wane, and cooler weather approaches. On the other hand, early fall gardening usually refers to planting in late September or early October when temperatures are consistently cooler, and the first frost date is approaching.

  1. Identifying Your Region's First Frost Date

Determining your region's first frost date is crucial for successful late summer gardening. This date marks the point at which the temperature drops low enough to cause frost, which can damage or kill many warm-season crops. Consult your local agricultural extension office or use online resources to find the approximate first frost date for your area. Knowing this date allows you to plan accordingly and choose vegetables that can thrive until that time.

Taking Advantage of the Long Growing Season in Warmer Climates

If you live in a warmer climate with a longer growing season, late summer offers an excellent opportunity to plant vegetables that can withstand mild winter conditions. These plants can continue to grow and produce well into late fall and even early winter.

  1. Planting in Late August or Early September

In warmer climates, late August or early September is the best time to start planting cool-season vegetables for a fall harvest. The soil is still warm, which aids in seed germination and root establishment. Some suitable options for this time include leafy greens like Swiss chard and mustard greens, as well as root vegetables such as carrots and radishes.

  1. The Benefits of a Mild Winter in Late November

In regions where winter temperatures are relatively mild, gardening can continue well into late November. Take advantage of this extended growing season by planting cool-season crops like brassicas. Brussels sprouts and cabbage are excellent choices that can thrive and develop large heads during the late summer months.

Brussel Sprouts growing on a plant
Brussel Sprouts/Photo Credit: 127071/Pixabay

Understanding the timing of late summer gardening in your specific region is essential for selecting the right vegetables and ensuring the best results. By aligning your planting schedule with your climate and frost dates, you can make the most of the remaining warm weather and enjoy an abundant harvest. In the next section, we will delve into the specific vegetables that thrive during this time of year and explore the best practices for growing them successfully.

Choosing the Right Vegetables for Late Summer

Late summer is a transitional period when both cool-season and warm-season vegetables can thrive, depending on your climate. Selecting the right vegetables for this time of year is crucial for a successful harvest. Let's explore some excellent options for late summer gardening.

Cool-Season Vegetables for Cooler Weather

Leafy Greens and Lettuces

Leafy greens and lettuces are popular choices for late summer gardens, as they thrive in cooler temperatures. They also add a refreshing touch to your meals with their crisp and flavorful leaves. Consider the following options:

Swiss Chard: A Hardy Vegetable for Fall Harvest

Swiss chard is a hardy vegetable that can withstand colder temperatures, making it an ideal choice for late summer gardens. With its vibrant stems and dark green leaves, Swiss chard adds visual interest to your garden beds. It can be harvested throughout the fall, providing a continuous supply of nutritious greens.

Swiss Chard leaf
Swiss Chard/Photo Credit: Hannah W/Unsplash

Mustard Greens: A Quick-Growing Option for Fresh Produce

Mustard greens are fast-growing leafy vegetables that are perfect for late summer planting. They have a slightly spicy flavor and are packed with vitamins and minerals. Planting mustard greens in late summer allows you to enjoy their tender leaves before the colder weather sets in.

mustard green harvest; bundle of greens
Mustard Green harvest/Photo Credit: Saadiya Riyasat

Root Vegetables

Root vegetables are another excellent choice for late summer gardens, as they can withstand cooler temperatures and continue to develop underground. Here are a couple of options:

Carrots: Planting Seeds for a Fall Harvest

Late summer is the perfect time to sow carrot seeds for a fall harvest. The soil is still warm, which aids in germination, and the cooler weather enhances the sweetness of the carrots. Choose varieties that mature relatively quickly, such as ‘Nantes' or ‘Danvers,' to ensure a timely harvest.

Radishes: Fast-Growing Root Crops in Cooler Temperatures

Radishes are known for their quick growth, making them an ideal choice for late summer planting. These crisp and peppery root crops can be harvested within a few weeks, providing a delicious addition to salads and sandwiches. Look for varieties with shorter maturity times, such as ‘Cherry Belle' or ‘French Breakfast.'


Brassicas, also known as cole crops, are cool-season vegetables that thrive in the cooler temperatures of late summer and fall. They include cabbage, Brussels sprouts, and other members of the brassica family. Consider the following options

Brussels Sprouts: Growing Large Heads in Late Summer

Brussels sprouts require a long growing season, and late summer is the perfect time to start them. These miniature cabbage-like vegetables develop tight, compact heads that become even sweeter after exposure to light frost. By planting Brussels sprouts in late summer, you can enjoy a fall harvest with larger, more flavorful sprouts.

Cabbage: Different Varieties for a Late Fall Harvest

Cabbage is a versatile vegetable with many different varieties suited for late summer planting. From green to red and savoy to Napa, you can choose the type that best suits your culinary preferences. Cabbages can be harvested when the heads are firm and compact, providing a nutritious addition to your fall dishes.

large head of cabbage
Cabbage/Photo Credit: Ulleo/Piixabay

Warm-Season Vegetables for Cooler Climates

If you live in a region with cooler climates, you can still grow warm-season vegetables during late summer. These crops can withstand the remaining warmth and provide a plentiful harvest before the colder weather arrives. Consider the following options:

Green Onions: A Versatile Option for Late Summer Gardens

Green onions, also known as scallions or spring onions, are a versatile option for late summer gardens. They have a mild flavor and can be used in various dishes.

Tips for Planting and Caring for Late Summer Vegetables

Preparing the Garden Beds and Soil

Before planting your late summer vegetables, it's essential to prepare the garden beds and ensure the soil is in optimal condition for growth. Follow these steps to set the stage for a successful garden:

Clearing out Old Plants and Debris

Start by removing any remaining plants from the previous season and clearing away debris or weeds. This helps prevent disease and pest issues and provides a clean slate for your new crops.

Amending the Soil for Optimal Growth

Late summer vegetables thrive in well-draining, fertile soil. Test the soil pH and amend it as needed to ensure a neutral to slightly acidic pH level. Incorporate organic matter such as compost or well-rotted manure to improve soil structure, fertility, and water-holding capacity

Providing the Right Growing Conditions

Late summer brings unique challenges, including high temperatures and potential drought. Ensure your vegetables have the right growing conditions for optimal growth and productivity:

Sunlight Requirements for Different Vegetable Varieties

Most vegetables require full sun, which means at least six to eight hours of direct sunlight per day. Observe your garden throughout the day to determine which areas receive the most sun and plant sun-loving vegetables accordingly. Leafy greens and cool-season crops may tolerate partial shade in warmer regions.

Watering Needs During Late Summer Heat

Proper watering is crucial during late summer, as high temperatures and dry conditions can stress plants. Aim to provide about an inch of water per week, either through rainfall or irrigation. Water deeply and less frequently to encourage deep root growth and prevent surface evaporation. Mulching around plants helps retain moisture and reduce weed growth.

Using Row Covers and Other Techniques for Frost Protection

In regions where late summer temperatures start to dip, consider using row covers or other protective measures to extend the growing season. Lightweight floating row covers can shield plants from light frosts and extend the harvest. Be sure to remove the covers during warm spells to prevent overheating.

Starting Seeds or Transplanting Young Plants

Late summer is a great time to start seeds or transplant young plants into the garden. Follow these guidelines for successful establishment:

Ensuring Successful Seed Germination in Late Summer

Late summer seed germination can be challenging due to high temperatures and drying soil. To improve germination rates, soak the seeds in water for a few hours before planting and keep the soil consistently moist. Consider providing some shade or using shade cloth to protect newly sown seeds from direct sunlight.

Selecting Healthy Transplants for a Head Start

If you prefer transplanting young plants, choose healthy seedlings with sturdy stems and vibrant foliage. Avoid root-bound or stressed plants. Prior to transplanting, prepare the planting holes and water the seedlings thoroughly to ease their transition into the garden soil.

By preparing the garden beds, providing suitable growing conditions, and starting seeds or transplanting young plants, you give your late summer vegetables the best chance for success. In the next section, we will discuss how to maintain your garden to ensure robust growth and a bountiful harvest.

Maintaining Your Late Summer Vegetable Garden

Regular Care and Maintenance

To ensure the health and productivity of your late summer vegetable garden, it's important to provide ongoing care and maintenance. Follow these tips to keep your plants thriving:

Regular Watering and Deep Root Watering

Monitor the moisture levels in your garden beds and water your plants accordingly. Deep root watering is especially beneficial during hot summer days, as it encourages plants to develop strong, deep root systems. Water in the early morning or late evening to minimize water loss due to evaporation.

Mulching for Moisture Retention and Weed Control

Apply a layer of organic mulch around your plants to retain moisture, suppress weeds, and regulate soil temperature. Organic mulches like straw, shredded leaves, or grass clippings are ideal choices. Mulching also helps prevent soil erosion and adds organic matter to the soil as it breaks down.

Pest and Disease Management

Late summer gardens can be susceptible to various pests and diseases. Stay vigilant and take proactive measures to keep your plants healthy:

Monitoring for Pests

Regularly inspect your plants for signs of pest activity, such as chewed leaves, holes, or discoloration. Common late summer pests include aphids, caterpillars, and snails. If you notice pest damage, take appropriate measures like handpicking, using organic insecticides, or introducing beneficial insects.

Disease Prevention

Late summer can bring certain plant diseases, such as powdery mildew or fungal infections, due to high humidity. To prevent diseases, provide adequate airflow between plants by spacing them properly. Avoid overhead watering, as it can promote fungal growth. If necessary, apply organic fungicides as a preventative measure.

Harvesting and Enjoying Your Late Summer Bounty

One of the most rewarding aspects of late summer gardening is the harvest of fresh and delicious vegetables. Follow these guidelines for a successful harvest:

Harvesting Leafy Greens and Cool-Season Vegetables

Leafy greens and cool-season vegetables are typically ready for harvest when they reach a mature size. Harvest outer leaves of leafy greens such as Swiss chard or mustard greens, allowing the inner leaves to continue growing. Radishes and carrots can be harvested when they reach the desired size and have developed their characteristic flavors.

Harvesting Brassicas and Other Late Summer Vegetables

Brussels sprouts and cabbage require a longer growing season before they can be harvested. For Brussels sprouts, start by picking the lower sprouts first, allowing the upper ones to continue developing. Harvest cabbage heads when they feel firm and solid. Use a sharp knife to cut them at the base.

Late summer gardening rewards you with a variety of fresh and nutritious vegetables. With proper care, maintenance, and timely harvesting, you can enjoy the fruits of your labor well into the fall months. In the final section, we'll explore some additional tips and considerations for a successful late summer garden.

Additional Tips and Considerations for Late Summer Gardening

Extending the Growing Season with Season Extenders

Late summer gardening allows you to extend the growing season and enjoy fresh produce for longer. Consider using season extenders to protect your plants from frost and cold temperatures:

Row Covers: Lightweight fabric covers can be placed over plants to provide a few degrees of extra warmth, protecting them from light frosts and chilly nights.

Cold Frames: These structures are like mini-greenhouses that trap heat and protect plants from harsh weather conditions. Cold frames can be used to grow cold-tolerant vegetables well into the winter months.

Planning for Succession Planting

Succession planting is a technique where you stagger the planting of crops at different times to ensure a continuous harvest. In late summer, you can start sowing seeds or transplanting young plants for a second crop that will mature later in the season. This maximizes your garden's productivity and provides a steady supply of fresh vegetables.

Saving Seeds for Next Season

Late summer is an opportune time to start saving seeds from your garden. Choose open-pollinated or heirloom varieties, allow the vegetables to fully mature and dry on the plant, and collect the seeds for future planting. Properly store the seeds in a cool, dry place for the next growing season.

Late Summer Flowers for Beauty and Pollinators

While focusing on your late summer vegetable garden, don't forget about adding beauty to your outdoor space. Consider planting late summer flowers that bloom during this time and attract pollinators:

Japanese Anemones: These daisy-like flowers add elegance to late summer borders and provide nectar for bees and butterflies.

pink japanese anemone flowers
Japanese anemone/Photo Credit: Alicja/pixabay

New England Aster: This native perennial bursts with vibrant purple flowers, creating a stunning display in late summer gardens and attracting pollinators.

purple bluish new england asters
New England Aster/Photo Credit: 19125283/pixabay

Reflecting on the Season and Planning for Next Year

As late summer transitions into fall, take a moment to reflect on your gardening journey and make notes about what worked well and what could be improved. Use this time to plan for the next growing season, considering crop rotation, soil amendments, and any adjustments to your garden layout or plant selection.

Late summer gardening offers a unique opportunity to savor the flavors of fresh vegetables while embracing the changing seasons. By implementing these additional tips and considerations, you can enhance your gardening experience and create a thriving garden that brings you joy and abundant harvests year after year.

Remember to always adapt your gardening practices to suit your specific region's climate, as gardening techniques may vary in different parts of North America. Happy late summer gardening!


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