Best Time To Plant Cabbage In Arizona

Arizona’s extreme heat demands cabbage planting during the cooler months to prevent bolting. The best time to plant cabbage in Arizona is during the fall and early winter, specifically from September through November for most low-elevation areas. This timing lets your cabbage grow in mild temperatures and mature before the scorching summer returns.

If you live in higher elevations like Flagstaff or Prescott, you have a slightly different window. There, spring planting from March to early April works well, as summers stay cooler. But for the majority of Arizona gardeners, fall is your friend.

Cabbage is a cool-season crop. It thrives when daytime temps are between 60°F and 70°F. Arizona’s low deserts, like Phoenix and Tucson, have very hot summers. So you need to plant when the weather is cooling down, not heating up.

Here is a quick breakdown by region:

Low desert (below 3,000 ft): Plant from mid-September to November. You can also try a late winter planting in February for a spring harvest, but bolting risk is higher.
Mid-elevation (3,000-5,000 ft): Plant from August to September for fall harvest, or March to April for spring harvest.
High elevation (above 5,000 ft): Plant in late March through May. Fall planting is tricky because frost comes early.

Knowing your local first and last frost dates helps. In Phoenix, the first frost is usually mid-December. In Flagstaff, it can be as early as September. Check your specific zone using the USDA hardiness map.

Why Fall Planting Works Best

Fall planting avoids the intense heat that makes cabbage bolt. Bolting means the plant sends up a flower stalk and stops making a tight head. The leaves become bitter. You do not want that.

Cooler fall nights also help cabbage develop sweeter flavor. A light frost can even improve the taste. Plus, pests like aphids and cabbage worms are less active in cooler weather.

One more benefit: fall-planted cabbage often stores longer in your fridge or root cellar. The heads are denser and more firm.

Spring Planting Risks

Spring planting in Arizona is possible but riskier. If you plant too late, the heat arrives before heads form. You end up with loose, bitter leaves. Even with shade cloth, success is less certain.

If you want to try spring planting, do it in February for low deserts. Use fast-maturing varieties like ‘Early Jersey Wakefield’ or ‘Golden Acre’. These can form heads in 60-70 days.

But honestly, fall is the safer bet. Most experienced Arizona gardeners stick to fall planting for cabbage.

Preparing Your Soil For Cabbage

Cabbage is a heavy feeder. It needs rich, well-draining soil with lots of organic matter. Before planting, mix in 2-3 inches of compost or aged manure. Also add a balanced fertilizer like 10-10-10.

Test your soil pH if you can. Cabbage prefers a pH between 6.0 and 6.8. Arizona soil is often alkaline. You might need to add sulfur or peat moss to lower the pH.

Here are steps to prepare your bed:

Clear all weeds and rocks from the area.
Loosen the soil to 12 inches deep.
Mix in compost and fertilizer.
Rake the bed smooth.
Water deeply a day before planting.

Good soil prep makes a huge difference. Cabbage roots need room to spread. Compacted soil leads to small heads.

Choosing The Right Cabbage Variety

Not all cabbage varieties do well in Arizona. You need types that mature quickly and tolerate some heat. Here are top picks:

Early Jersey Wakefield: Heirloom, cone-shaped heads, matures in 60-65 days. Very reliable.
Golden Acre: Round, compact heads, ready in 65 days. Good for small spaces.
Red Acre: Red cabbage, matures in 70 days. Holds up well in heat.
Savoy King: Crinkly leaves, tender texture, 70 days. More heat tolerant than some.
Stonehead: Hybrid, very uniform, 65-70 days. Disease resistant.

Avoid long-season varieties like ‘Late Flat Dutch’ that need 100 days. They likely will not make it before heat hits.

How To Plant Cabbage Seedlings

You can start cabbage from seed indoors or buy transplants. For fall planting, transplants are easier. They give you a head start.

If you start seeds indoors, do it 4-6 weeks before your planting date. Use seed starting mix and keep them under grow lights. Harden them off for a week before transplanting.

When planting transplants:

Dig holes 12-18 inches apart. Rows should be 24-36 inches apart.
Place the seedling so the lowest leaves are just above soil level.
Firm the soil around the roots gently.
Water thoroughly right after planting.
Add a layer of mulch to keep soil cool and moist.

Spacing matters. Crowded cabbage plants compete for nutrients and water. Heads will be smaller. Give them room.

Watering Cabbage In Arizona

Cabbage needs consistent moisture. In Arizona’s dry climate, that means watering deeply 2-3 times per week. Drip irrigation is best. It keeps water off the leaves, reducing disease risk.

During hot spells, you might need to water every other day. Check soil moisture by sticking your finger 2 inches deep. If it feels dry, water.

Mulch is your best friend. A 2-3 inch layer of straw, wood chips, or grass clippings helps retain moisture and keeps roots cool. It also suppresses weeds.

Inconsistent watering causes cabbage heads to crack. If the soil dries out then gets flooded, the heads swell too fast and split. Keep watering even.

Fertilizing Cabbage For Best Growth

Cabbage is a heavy feeder. It needs nitrogen for leafy growth. About 2-3 weeks after transplanting, side-dress with a nitrogen-rich fertilizer. Blood meal or fish emulsion works well.

Apply fertilizer again when the heads start forming. Use a balanced fertilizer like 10-10-10 or a vegetable-specific blend. Follow package directions.

Signs of nutrient deficiency include yellowing lower leaves, slow growth, and small heads. If you see these, fertilize right away.

But do not overdo it. Too much nitrogen can cause lush leaves but loose, watery heads. Stick to the recommended amounts.

Pest And Disease Management

Cabbage attracts several pests in Arizona. The most common are:

Cabbage loopers: Green caterpillars that eat holes in leaves. Use Bt (Bacillus thuringiensis) or neem oil.
Aphids: Small insects that suck sap. Spray with insecticidal soap or strong water stream.
Slugs and snails: They hide in mulch and eat leaves at night. Use iron phosphate bait or hand pick.
Root maggots: White larvae that attack roots. Use row covers to prevent egg laying.

Prevention is key. Rotate crops each year. Do not plant cabbage where other brassicas (broccoli, kale) grew recently. Clean up plant debris after harvest.

Diseases like club root and black rot can be problems. Club root causes swollen, deformed roots. It thrives in acidic soil. Keep pH above 6.0. Black rot shows as yellow V-shaped spots on leaf edges. Remove infected plants immediately.

Harvesting Cabbage At The Right Time

Cabbage is ready to harvest when the head feels firm when squeezed. It should be solid, not spongy. The head size depends on variety. Some are small, some large.

Cut the head at the base with a sharp knife. Leave a few outer leaves attached. These protect the head during storage.

If you leave cabbage in the ground too long, the head may split. This happens after heavy rain or overwatering. Harvest as soon as the head is firm.

For fall-planted cabbage in Arizona, harvest usually happens from December through February. In higher elevations, it might be October or November.

Storing Fresh Cabbage

Fresh cabbage stores well in the refrigerator. Wrap it loosely in plastic wrap or a damp paper towel. It will keep for 2-3 weeks.

For longer storage, you can keep cabbage in a cool, dark place like a root cellar. Temperatures around 32-40°F with high humidity are ideal. Some varieties store for months.

Do not wash cabbage before storing. Moisture encourages rot. Wash it just before using.

Common Mistakes When Planting Cabbage In Arizona

Many new gardeners make these errors. Avoid them for better results:

Planting too late in spring: Heat arrives fast. Heads do not form.
Not hardening off transplants: Sudden sun and wind shock the plants.
Overcrowding: Cabbage needs space. Thin to proper spacing.
Skipping mulch: Soil dries out fast. Roots get hot.
Inconsistent watering: Leads to cracked heads and bitter taste.
Ignoring pests: Check leaves weekly. Treat early.

Learn from these mistakes. Your cabbage will thank you.

Seasonal Care Tips For Arizona Cabbage

Here are month-by-month tips for fall planting:

September

Prepare soil and plant transplants. Water deeply. Apply mulch. Watch for heat waves and provide shade if temps exceed 90°F.

October

Fertilize after 3 weeks. Check for pests. Water consistently. Days are cooling, which is perfect for growth.

November

Heads start forming. Keep watering. Apply second fertilizer. Protect from frost if temps drop below 28°F. Use row covers.

December

Harvest begins. Check heads for firmness. Store in fridge or give away extras. Enjoy fresh cabbage in winter salads and soups.

January-February

Finish harvesting. Remove spent plants. Prepare soil for spring crops. You can also plant a late winter crop if you want.

Frequently Asked Questions

Can I plant cabbage in summer in Arizona?

No, summer heat is too intense. Cabbage will bolt and not form heads. Stick to fall or early spring.

What is the best month to plant cabbage in Phoenix?

October is ideal. Temperatures are mild, and the risk of extreme heat is low. September also works if you use shade cloth.

How long does cabbage take to grow in Arizona?

Most varieties mature in 60-80 days from transplanting. Faster types like ‘Early Jersey Wakefield’ can be ready in 55-60 days.

Do I need to protect cabbage from frost in Arizona?

Light frost is fine and can improve flavor. Hard frost below 28°F can damage heads. Use row covers or cloches if a hard freeze is forecast.

Can I grow cabbage in containers in Arizona?

Yes, use a container at least 12 inches deep and wide. Choose compact varieties like ‘Golden Acre’. Keep soil moist and fertilize regularly.

Final Thoughts On Planting Cabbage In Arizona

Planting cabbage in Arizona is all about timing. The best time to plant cabbage in Arizona is during the cooler months, from September through November for low deserts. This avoids the heat that causes bolting and gives you a tasty, reliable harvest.

Prepare your soil well, water consistently, and watch for pests. With a little care, you can enjoy fresh, homegrown cabbage all winter long. It is a rewarding crop that stores well and tastes much better than store-bought.

So grab some transplants, prep your garden bed, and get planting. Your winter salads will thank you.