Maryland’s August planting list includes fall spinach, Swiss chard, and turnips that thrive in cooler autumn weather. If you are looking for the best vegetables to plant in August in Maryland, you have come to the right place. August in Maryland can still be hot, but the evenings start to cool down, making it perfect for a second planting season. You can enjoy fresh produce well into November if you choose the right crops now.
This guide covers everything you need to know about late-summer gardening in the Old Line State. From leafy greens to root vegetables, you will find practical advice for a successful fall harvest. Let’s get started without any fluff.
Best Vegetables To Plant In August In Maryland
August is a transition month. The intense heat of July fades, and soil temperatures remain warm enough for quick germination. The key is selecting vegetables that mature before the first hard frost, which typically hits Maryland in mid-to-late October. Here are the top choices for your August garden.
Leafy Greens For Quick Harvests
Leafy greens are your best bet for August planting. They grow fast and tolerate light frosts, which actually sweetens their flavor. You can start harvesting in as little as 30 days.
- Spinach: Spinach loves cool weather. Sow seeds directly in the ground in early August. It germinates best when soil is kept moist. Harvest baby leaves in 4-6 weeks.
- Swiss Chard: This is a tough plant. It handles heat better than spinach and keeps producing after frost. Plant seeds 1 inch deep and thin seedlings to 6 inches apart.
- Kale: Kale is a superstar for fall gardens. It gets sweeter after a frost. Plant it in August for harvests from October through December. Try varieties like ‘Lacinato’ or ‘Red Russian’.
- Lettuce: Loose-leaf lettuce varieties are ideal. They mature in 45-55 days. Plant them in partial shade if August is still very hot. Romaine and butterhead also work well.
- Arugula: This peppery green grows very fast. You can have baby arugula in just 3-4 weeks. It bolts quickly in heat, so keep it watered and shaded if possible.
Root Vegetables That Store Well
Root vegetables are perfect for August planting because they need consistent moisture and cooler soil to develop properly. They also store well through winter.
- Turnips: Turnips are dual-purpose. You can eat the roots and the greens. Plant them in late August for a fall harvest. ‘Purple Top White Globe’ is a reliable variety.
- Beets: Beets need loose, well-drained soil. Soak seeds overnight before planting to speed up germination. They mature in 50-60 days. Harvest when roots are 1-2 inches wide.
- Carrots: Carrots are tricky in heavy clay soil. If your soil is dense, grow them in raised beds or containers. ‘Nantes’ and ‘Danvers’ varieties do well in Maryland. Plant seeds shallowly and keep soil damp.
- Radishes: Radishes are the fastest root vegetable. Some varieties mature in just 25 days. Plant them every two weeks for a continuous harvest. They are great for filling empty spaces.
- Parsnips: Parsnips take longer, about 100-120 days. But they are worth it. Plant them in August for a harvest after the first frost, which makes them sweeter. They need deep, loose soil.
Brassicas For Fall Flavor
Brassicas, or cole crops, thrive in cool weather. August is the ideal time to set out transplants for a fall harvest. Direct seeding is also possible for some varieties.
- Broccoli: Start broccoli seeds indoors in July or buy transplants in August. They produce best when temperatures are below 80°F. Harvest the main head before it flowers, then side shoots will follow.
- Cauliflower: Cauliflower is more sensitive than broccoli. It needs consistent moisture and cool temperatures. Plant transplants in early August. Blanch the heads by tying leaves over them to keep them white.
- Cabbage: Cabbage is hardy and stores well. Plant transplants in August for fall harvest. Varieties like ‘Savoy’ and ‘Red Acre’ are good choices. They can handle light frosts.
- Brussels Sprouts: These take a long time, up to 100 days. But they taste best after a frost. Plant transplants in early August. They grow tall, so give them space. Harvest sprouts from the bottom up.
- Kohlrabi: This odd-looking vegetable is easy to grow. It matures in 50-60 days. Plant seeds directly in August. Harvest when the bulb is 2-3 inches wide. It tastes like a mild turnip.
Legumes For Soil Health
Legumes like peas and beans fix nitrogen in the soil, which benefits your garden. August is a good time for a second planting of certain varieties.
- Snow Peas: Snow peas prefer cool weather. Plant them in late August for a fall harvest. They need a trellis to climb. Pick the pods before the peas inside swell.
- Snap Peas: Similar to snow peas, snap peas are eaten whole. They are sweet and crisp. Plant them in August and they will produce until frost. Keep them well-watered.
- Bush Beans: Bush beans are fast and easy. They mature in 50-60 days. Plant them in early August for a late September harvest. They do not need support. ‘Provider’ is a good variety for fall.
Herbs That Love Cool Weather
Many herbs also do well when planted in August. They add flavor to your meals and attract beneficial insects.
- Cilantro: Cilantro bolts quickly in heat. Plant it in August for a fall harvest. It grows fast and you can use the leaves and seeds (coriander).
- Parsley: Parsley is a biennial, but it grows well in fall. Plant seeds or transplants in August. It is slow to germinate, so be patient. It adds fresh flavor to many dishes.
- Dill: Dill is great for pickling and cooking. It grows quickly and self-seeds easily. Plant it in August for a fall harvest. It attracts swallowtail caterpillars.
- Chives: Chives are perennial and very hardy. You can plant them in August for a harvest this fall and for years to come. They grow well in containers or in the ground.
How To Plant A Successful August Garden In Maryland
Planting in August requires some adjustments compared to spring. The soil is warm, but the days are getting shorter. Here are the steps to follow for the best results.
Prepare Your Soil Properly
After your summer crops are done, the soil may be tired. Add compost or aged manure to replenish nutrients. Remove any spent plants and weeds. Loosen the soil to at least 8 inches deep. This helps root vegetables grow straight.
Test your soil pH if you haven’t done so recently. Most vegetables prefer a pH between 6.0 and 7.0. Add lime if your soil is too acidic. Add sulfur if it is too alkaline. A simple test kit from a garden center works fine.
Water Consistently
August is often dry in Maryland. Seeds need constant moisture to germinate. Water daily if there is no rain. Use a gentle spray so you don’t wash away seeds. Once plants are established, water deeply once or twice a week. Mulch around plants to retain moisture and keep roots cool.
Drip irrigation is ideal for fall gardens. It delivers water directly to the roots and reduces disease. Soaker hoses also work well. Avoid overhead watering in the evening, as wet leaves can lead to fungal problems.
Provide Shade For Young Seedlings
The August sun can be intense. Young seedlings may wilt or burn. Use shade cloth or row covers to protect them during the hottest part of the day. You can also plant in areas that get afternoon shade from taller plants or structures. Once the weather cools in September, remove the shade.
Another trick is to plant seeds slightly deeper than recommended. This keeps them cooler and moister. Just be sure not to bury them too deep, or they won’t germinate.
Thin Seedlings Early
Overcrowding leads to weak plants and poor yields. Thin seedlings as soon as they have two true leaves. Follow the spacing guidelines on the seed packet. For carrots and beets, thin to 2-3 inches apart. For leafy greens, thin to 6-8 inches apart. You can eat the thinnings in salads.
Use scissors to snip off extra seedlings at soil level. This avoids disturbing the roots of the plants you keep. Thinning is one of the most important steps for a successful fall garden.
Fertilize Lightly
Fall vegetables do not need as much nitrogen as spring crops. Too much nitrogen leads to lush leaves but poor roots. Use a balanced fertilizer with a ratio like 10-10-10 or 5-5-5. Apply it at planting time and again when plants are halfway to maturity.
Liquid fertilizers like fish emulsion are also effective. Apply them every two weeks for leafy greens. For root vegetables, use a fertilizer higher in phosphorus and potassium. This encourages strong root development.
Common Pests And Diseases In August
August gardens face specific pests. Knowing what to look for helps you act fast. Here are the most common problems and how to handle them.
Aphids And Cabbage Worms
Aphids cluster on new growth and suck sap. They can spread diseases. Spray them off with a strong jet of water or use insecticidal soap. Cabbage worms eat holes in brassica leaves. Handpick them or use row covers to keep butterflies away. Bacillus thuringiensis (Bt) is an effective organic control.
Slugs And Snails
Slugs love cool, moist conditions. They hide under mulch and come out at night. Set out beer traps or use diatomaceous earth around plants. You can also handpick them after dark. Remove debris and weeds where they hide.
Fungal Diseases
Powdery mildew and downy mildew are common in late summer. They appear as white or gray powder on leaves. Improve air circulation by spacing plants properly. Water at the base of plants, not on leaves. Remove infected leaves immediately. Neem oil can help control mild outbreaks.
Harvesting Your Fall Vegetables
Knowing when to harvest is key to getting the best flavor and texture. Here are general guidelines for each group of vegetables.
Leafy Greens
Harvest leafy greens when they are young and tender. For spinach and lettuce, pick outer leaves first. This allows the inner leaves to keep growing. For kale and chard, harvest the largest leaves from the bottom. Leave at least 5-6 leaves on the plant so it can regrow. A light frost improves the flavor of kale and spinach.
Root Vegetables
Root vegetables are ready when they reach the size shown on the seed packet. For carrots, gently brush away soil to check the top. For beets and turnips, harvest when they are 1-3 inches wide. Radishes are best when small, about 1 inch across. Parsnips should be left until after a frost for the sweetest taste.
Brassicas
Harvest broccoli when the heads are tight and dark green. Cut the main head with a sharp knife. Side shoots will develop later. For cauliflower, harvest when the head is compact and white. Cabbage is ready when the head feels firm when squeezed. Brussels sprouts are best after a frost; harvest from the bottom up.
Extending The Season With Covers
Maryland’s first frost usually comes in mid-October. But you can extend your harvest by several weeks with simple covers. Row covers, cloches, and cold frames protect plants from light frosts. They trap heat and keep the soil warmer.
For extra protection, use heavy row covers or plastic tunnels. These can keep plants alive through temperatures in the low 20s. You can also grow vegetables in containers and move them indoors or to a sheltered location on cold nights.
Frequently Asked Questions
Can I Plant Tomatoes In August In Maryland?
It is not recommended to plant tomatoes in August. They need a long, warm season to mature. You might get a few small fruits before frost, but it is not worth the effort. Focus on fast-growing fall vegetables instead.
What Is The Best Way To Water An August Garden In Maryland?
Water deeply and less frequently. Aim for 1-2 inches of water per week. Use drip irrigation or soaker hoses to keep leaves dry. Water in the morning to reduce evaporation and disease risk.
Should I Use Fertilizer For Fall Vegetables?
Yes, but use a balanced fertilizer with lower nitrogen. Too much nitrogen causes leafy growth at the expense of roots and fruits. Apply a light dose at planting and again halfway through the growing period.
How Do I Protect My August Garden From Deer And Rabbits?
Use fencing at least 4 feet tall for deer and 2 feet tall for rabbits. Row covers also provide protection. Repellents can help, but they need to be reapplied after rain. Planting strong-smelling herbs like garlic and chives can deter some animals.
What Vegetables Can I Plant In August For A Winter Harvest In Maryland?
Kale, Brussels sprouts, and parsnips can be harvested into winter if protected. Carrots and beets can be left in the ground under a thick layer of mulch. You can also grow cold-hardy greens like mache and winter lettuce in a cold frame.
Final Tips For August Planting In Maryland
Start your August garden with a plan. Check the days to maturity for each vegetable and count backward from your average first frost date. This ensures you have enough time for a harvest. Keep a garden journal to track what works and what doesn’t.
Don’t be afraid to try new varieties. Some vegetables, like ‘Siberian’ kale or ‘China Rose’ radish, are especailly bred for fall growing. They handle cold better than standard varieties. Your local garden center can recommend specific cultivars for Maryland.
Remember that August planting is about working with the season, not against it. The soil is warm, the pests are fewer, and the cooler weather ahead is perfect for many crops. With a little effort, you can enjoy fresh vegetables from your garden well into November.
So grab your seeds, prepare your beds, and get planting. Your fall harvest starts now.