Growing Sweet corn, also corn,maize

Zea mays, var. rugosa : Poaceae / the grass family

Jan F M A M J J A S O N Dec
        P P            

(Best months for growing Sweet corn in USA - Zone 5a regions)

  • P = Sow seed
  • Sow in garden. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 61°F and 95°F. (Show °C/cm)
  • Space plants: 8 - 12 inches apart
  • Harvest in 11-14 weeks.
  • Compatible with (can grow beside): All beans, cucumber, melons, peas, pumpkin, squash, amaranth
  • Avoid growing close to: Celery.

Your comments and tips

20 May 16, Jennifer (Australia - tropical climate)
Once I've picked the cobs is the rest of the plant a write off... ie. Dig it out?
25 May 16, Bob Dobbs (Australia - sub-tropical climate)
Yes
23 May 16, David (Australia - arid climate)
No why not use them as a support to grow some climber like sweet peas, beans, once these have finished then dig them out.
07 May 16, Rosemary (Australia - temperate climate)
Hi Phoebe. If you plant corn outside now it might germinate if you are lucky, but it won't grow much because it is too cold. Best time to plant it is in spring or early summer. You might like to try peas or broad beans for this time of the year. Both are easy to germinate and grow. If you are looking for a grassy type of plant to grow, try wheat or barley. Good luck.
02 May 16, Phoebe (Australia - temperate climate)
Hi, I live in adelaide and I am planning to plant corn as part of my school project however I was wondering whether it could be planted in May eventhough its not a best season for it. Will it still germinate and grow?
25 Mar 16, Greg (the buck) (Australia - sub-tropical climate)
Grow your corn in 2mx2m squares. Plant squash & beans with them, it's an old method called the 3 sisters. Each plant gives good energy to the other. Try it. You will be blown away by the quality of your veg.
22 Mar 16, Victoria (Australia - temperate climate)
you can use the stalks to grow your peas up.
20 Mar 16, Eryn (Australia - sub-tropical climate)
How long can a one sweet corn plant produce for? We have just harvest corn from the plants, are they now useless and need to be replaced?
16 Apr 16, Bob Dobbs (Australia - sub-tropical climate)
Yes, they need to be replaced as they will not crop again. They will die off. All the best, Bob
14 Mar 16, Hussein (South Africa - Humid sub-tropical climate)
Dear Sir, I would like to introduce sweet corn in Uganda, we do grow maize corn during our rainny season ( March,April and May) or (August,September,October and November). Can you please advice me where to get the seeds and when to plant it.
Showing 221 - 230 of 432 comments

Perth: This impressive crop does take up a bit of room but it's well worth it; the sweetness of fresh picked home-grown sweet corn is hard to beat. Plant from September through to January. Preparing the site Choose a sunny site that’s protected from strong winds. Sweet corn is a hungry crop so it’s important to enrich your soil before planting. Add a plenty of aged manure and a handful of blood & bone per square metre and fork it in well. Sweet corn will do well in a bed that’s previously grown healthy peas or beans. In the right conditions, each plant will usually produce 2 ears of corn. Planting Plant seedlings or seeds (ensure seeds are fresh). Space 30cm apart and plant in blocks rather than a single long row. Planting in blocks assists pollination which is essential for the development of kernels. Plant early and late varieties in separate blocks for a longer season. Water seeds well after planting then sparingly until germination occurs as the seeds can rot easily. When the stalks are about 20cm high, mound the soil up against the stalks. This process, called hilling, encourages more roots to grow which will help stabilise the plant during windy conditions. You can also achieve the same result by planting the seeds in a furrow and backfilling as the plants grow. Watering and fertilising Once the plants are well underway it’s important to ensure an adequate moisture level, especially since the plants will be at their peak of fruit production over the hot months. Drip irrigate if possible and mulch well to retain moisture. As soon as the tassel appears at the top of the plant, give the soil a boost with a granular fertiliser that’s high in nitrogen. Insufficient pollination results in ears of corn with lots of missing kernels. Planting sweet corn in one long single row can result in most of the pollen being blown away, which is why gardeners plant corn in blocks instead.Can be hand pollinated by cutting off a pollen-laden tassel each day and gently brushing over the silks . Sweet corn is ready to pick 2-3 weeks after pollination and it's important to keep up the water during this time.

- Mike

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