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

10 Aug 14, Naomi (Australia - temperate climate)
There aren't many kernels because they didn't pollinate. You can self-pollinate by grabbing the pollen off the tassels (at the top) and sprinkling onto the silk threads. Worked well for us!
17 Feb 14, John (Australia - temperate climate)
hi .can you tell me how we can stop ants eating our corn . just lost 15 plants for the second time . they eat the corn itself not the plant .
27 Jan 14, Eve Hjort (Australia - temperate climate)
I have grubs in my corn cobs how do I get rid of them
25 Jan 14, Peter (Australia - sub-tropical climate)
do you remove the seeds off the cob to dry out or just leave them on the cob.
23 Jan 14, Robyn (Australia - temperate climate)
Does anyone have suggestions for 'Scarecrows' or other alternatives to keep the birds away?
11 Jan 14, Sam (Australia - temperate climate)
My sweet corn has prolific growth of side-stalks emerging from the base of each plant. Is this normal, and should the additional stalks be removed to encourage growth and production from the main stalk?
24 Jan 14, nic (Australia - temperate climate)
yes
22 Dec 13, bren stephens (Australia - temperate climate)
thank you so much for the great clear explanation. it is our first try at corn. bren
19 Dec 13, bren (Australia - temperate climate)
We are trying to grow sweet corn in Coogee sydney. The plants are growing but the top 9 inches have turned to seed like things and lower down the stem there is feathery like fronds. Should I cut the seed like things off? Thanks in anticipation. Bren
20 Dec 13, (Australia - arid climate)
Do NOT cut them off! That is where the pollen to fertilize the cobs comes from. The feathery bit or silks as they are known are there to receive the pollen. I hope this is not too late too save your corn.
Showing 271 - 280 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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