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

25 May 23, Renee Bowman (USA - Zone 9b climate)
Something is eating my corn stalks leaves leaving holes in them and inside center of stalks looks like wet corn meal or mash can it still be salvaged and what could be causing this? How do I prevent and stop this infestation?
01 Jun 23, (USA - Zone 9b climate)
Check for big grubs.
17 May 23, Jessica (South Africa - Summer rainfall climate)
Hello. When can I grow sweet corn in Botswana?
19 May 23, (South Africa - Summer rainfall climate)
Find your climate zone and check the planting guide.
08 Mar 23, harvey (USA - Zone 11b climate)
What organic corn varieties and organic soybean varieties grow well in climate zone 11A-11B?
10 Jan 23, Wessel Naude (South Africa - Summer rainfall climate)
Hi there.Can i still sow sweetcorn in January
21 Jun 23, (South Africa - Summer rainfall climate)
greetings. can see you farming sweet corn . can you whatsapp me on +27630965740. need also some information how to go grow it as well
13 Feb 23, (South Africa - Summer rainfall climate)
Sept to Nov
31 Dec 22, William (USA - Zone 7a climate)
What is the recommended type sweet corn to grow in zone 7a?
05 Jan 23, Anonymous (USA - Zone 5a climate)
More about finding a variety you like. Some corns are starchy and some really sweet.
Showing 11 - 20 of 412 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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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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