The Best Herbs for Small Backyard Gardens, Compact Picks and Midsummer Care

The Best Herbs for Small Backyard Gardens, Compact Picks and Midsummer Care

Short answer: Choose compact basil, chives, thyme, oregano, parsley, and a contained mint. These are the best herbs for small backyard gardens because they fit pots or a single 4 by 4 foot raised bed, give frequent harvests, and survive midsummer if you water deeply and pinch back flowering stems.

I will show you how to choose, plant, and keep a compact, productive herb patch this weekend with exact pot sizes, spacings, and harvest and watering timings tied to your frost dates. Read this and you can plant or adjust your pots today.

My top compact

Below are the herbs I reach for when space is tight. I give a recommended variety, container size, spacing, soil temperature, midsummer water amount, and one failure to watch for.

• Basil, compact types, varieties: ‘Spicy Globe’, ‘Greek Mini’, ‘Tiny Tim’. Plant in a 1 to 2 gallon pot or space 8 to 10 inches apart in beds. Soil temperature for transplant and seeds, 70 to 85 degrees F. Midsummer watering, 1.5 to 2 cups per 1 gallon pot every day to every other day in heat. Failure mode: bolting in extreme heat, fix by pinching flowers and providing afternoon shade above 90 degrees F.
• Chives, variety: common chives. Plant in a 6 inch pot or space 6 inches apart. Transplant when soil is above 45 to 50 degrees F. Midsummer watering, 1 to 1.5 cups for a 6 inch pot every 2 to 4 days. Failure mode: yellow limp leaves from overwatering, fix by using pots with drainage and a thin 1 inch mulch in beds.
• Thyme, variety: English or ‘Silver Queen’. Plant in a 4 to 6 inch pot or space 8 to 12 inches apart. Prefers soil 60 to 70 degrees F at transplant. Use a well draining mix. Midsummer watering, 1 cup per 4 inch pot when top 1 inch is dry, usually every 3 to 5 days. Failure mode: root rot from heavy soil, fix with mix that contains perlite or coarse sand.
• Oregano, variety: Greek oregano. Needs a 1 to 2 gallon pot or 10 to 12 inches spacing in beds. Soil temp for transplant 50 to 60 degrees F. Midsummer watering, 1.5 to 2 cups for a 1 gallon pot once or twice a week, let top 1 inch dry between waterings. Failure mode: weak flavor from crowding, trim and harvest from outer stems.
• Mint, peppermint or spearmint, container only unless you want it to spread. Plant in a 2 to 3 gallon pot, give 12 inches spacing if you must confine it in a box. Soil temp for planting 45 to 60 degrees F. Midsummer watering, 2 to 3 cups per 2 gallon pot every 2 days in heat. Failure mode: invasive spread, keep in container sunk into the ground or on a patio.
• Parsley, variety: Italian flat leaf. Start in a 1 gallon pot or space 8 to 10 inches apart. Seeds are slow, germination soil temp 60 to 70 degrees F, expect 14 to 28 days to appear. Midsummer watering, 1.5 cups per 1 gallon pot daily in extreme heat or keep evenly moist 1 inch down. Failure mode: slow germination; start indoors 6 weeks before transplant if your last frost is late.
• Rosemary, select ‘Arp’ or ‘Hill Hardy’ for best cold tolerance. Use a 3 to 5 gallon pot in zone 6b unless overwintering indoors. Space 18 to 24 inches in large beds. Soil temp for transplant 55 to 65 degrees F. Midsummer watering, 3 to 4 cups for a 3 gallon pot once a week, allow surface to dry 1 to 2 inches between waterings. Failure mode: winter dieback in colder zones, move pots indoors or mulch heavily.

Compact layout and timing table

Use this small table to compare container size, spacing, and a typical midsummer water amount. Adjust timing to your frost dates as noted below.

Soil, bed preparation, and frost timing

For a 4 by 4 foot raised bed, 12 inches deep, you need 16 cubic feet of soil, roughly 120 gallons. Mix by volume: 0.6 cubic foot good topsoil, 0.3 cubic foot compost, 0.1 cubic foot perlite or coarse sand per cubic foot.

For containers use a potting mix with 1 part compost to 3 parts potting soil and 1 part perlite. Use pots with drainage holes. For Mediterranean herbs like thyme, oregano, and rosemary, add extra perlite one part to two parts potting mix for drainage.

Tie planting to your frost dates. Tender annuals like basil should go out 7 to 10 days after your last frost date and when soil is above 65 degrees F. Hardy perennials like thyme, oregano, and chives can go out when soil holds above 45 to 50 degrees F. In central Ohio zone 6b last frost is usually mid May, first frost mid October, adjust earlier in warmer zones and later in colder zones.

If you plan to grow tomatoes with herbs in the same containers, read how to grow tomatoes in containers to match pot size and watering. If you plan several herbs in a raised bed, see raised bed gardening for beginners for filling, drainage, and layout tips.

Planting and spacing, step by step

1. Check your last frost date and soil temperature. Use a soil thermometer and target the ranges above. If soil is too cool wait or start seeds indoors.
2. Fill pots to 1 inch below rim. For transplants, plant at the same soil depth they were in nursery pots, firm soil around roots, and water until runoff.
3. In a 4 by 4 bed use a simple grid: two rows of three to four plants each depending on spacing. Stick to the spacings in the table. Mark centers with a pencil to plant accurately.
4. Mulch beds with 1 to 2 inches of straw or shredded leaves to keep roots cool and reduce watering frequency. Do not mulch very close to rosemary crowns, leave a 1 inch gap.
5. Label pots and beds with planting date. This helps with succession sowing and knowing when to harvest or rotate.

Midsummer care and pest patrol

July care is about deep watering, regular harvesting, and checking for pests. Aim for 1 inch of water per week for beds, which soaks the soil to about 6 inches. One inch equals roughly 0.62 gallons per square foot or 10 gallons for a 4 by 4 foot bed.

• Water pots until you see runoff, then let the top 1 inch dry for Mediterranean herbs and 1 inch to 2 inches for tender herbs. Small pots may need a second light water in extreme heat.
• Water early morning so foliage dries before night. In July check pots daily and beds twice a week, adjust after heat waves.
• Harvest often, pinch back 1 to 2 inches from tips to encourage bushy growth and delay bolting. Remove flower spikes on basil and parsley to keep leaves producing.
• For pests look under leaves for aphids and spider mites. Hose them off, prune badly affected stems, and contact your county extension for chemical options if needed. I ignored an aphid outbreak last July and lost a young basil patch, so check weekly.

Common mistakes and weekend action plan

Here are the usual mistakes and a quick plan to get the job done this weekend.

• Overcrowding reduces airflow and flavor. Thin seedlings to the spacings above within two weeks of transplant.
• Poor drainage leads to rot. Use pots with drainage and add perlite to heavy soils.
• Planting basil too early, which causes slow growth and susceptibility to cold. Wait for warm soil and nights above your last frost average.
• Putting mint directly in beds, which leads to full garden takeover. Keep mint in a 2 to 3 gallon pot.

1. Saturday morning, gather supplies. For a 4 by 4 bed get 16 cubic feet of mix, one 2 gallon pot, two 1 gallon pots, two 6 inch pots, a bag of compost, and perlite. Buy pots with drainage holes sized as above.
2. Check frost dates and soil temperature. If you are past your last frost and soil meets temps above, transplant. If not, start seeds indoors or wait for hardy perennials.
3. Fill pots, plant transplants at same depth, water until runoff and note how many cups you used for each pot size. Space in bed per the table.
4. Mulch beds with 1 to 2 inches and label plants. Set a weekly check day for pests and harvest, and a daily quick check for small pots during heat waves.

FAQ heading

Which herbs grow best in small pots on a sunny patio?

Thyme, chives, compact basil, and oregano are best for small pots. Use 4 to 6 inch pots for thyme and chives, 1 to 2 gallon pots for basil and oregano. Give 4 to 6 hours of sun, use a free draining potting mix, and water when the top inch of soil is dry.

How often should I water herbs in midsummer?

For raised beds aim for 1 inch of water per week, increase after heat waves. For pots water until you see runoff from the drainage hole and then let the top 1 inch dry for Mediterranean herbs, and 1 to 2 inches for tender herbs. Small pots often need daily checks in July.

Can I overwinter rosemary in zone 6b?

Yes if you choose cold tolerant varieties like ‘Arp’ or ‘Hill Hardy’. Move potted rosemary indoors when temperatures drop below 20 to 25 degrees F, or heavily mulch and protect from winter winds if you leave it outdoors. Potted rosemary is easier to move than in-ground plants.

Why did my cilantro bolt and what can I plant instead?

Cilantro bolts quickly in hot weather. To avoid bolting, sow new seeds every 2 to 3 weeks in spring and fall, give afternoon shade in midsummer, or choose parsley for a longer season of leaf production. Pull bolted cilantro and replant for a fall crop.