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 P P

(Best months for growing Sweet corn in New Zealand - cool/mountain regions)

  • P = Sow seed

October: After risk of frost

  • 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

16 Feb 17, Ingrid (Australia - tropical climate)
Hi, I'm a single mum on a serous budget and only a small space in the courtyard. Am I able to grow sweetcorn in pots? Am I better off planting them in the garden? What size pots do I need ? I like gardening. I sometimes wonder if it's just cheaper to buy a $ 1 cob and be done with it! Thank you for the emails. I find them very helpful. Ingrid
16 Feb 17, John (Australia - temperate climate)
Sweet corn will grow in large pots or tubs. It likes plenty of water and a good food supply (manure, compost, etc). 20 litre buckets may be obtained free from bakeries or fast food outlets. Drill some drainage holes in the bottom. Large planter tubs may also be availble from landscapers who plant advanced trees. With ample food and water you could try 2 or 3 plants per tub. To increase yield from that space plant 2 or 3 climbing bean seeds as well. they will climb up the corn stalks adding another vegetable to your harvest. It maybe too late to plant sweet corn this season but you could try salad greens (lettuce, bok choi, etc), carrots or beetroot. Not too much manure for the carrots or they will have forked roots. There is a huge variety of food that can be grown in small spaces and tests have shown that you can feed a family of 4 in the area of a double carport (6m x 6m). Keep going its great to grow your own healthy food. Trust this helps.
17 Feb 17, Ingrid (Australia - tropical climate)
Thank you for that very helpful feedback! Ingrid
13 Feb 17, Matam (South Africa - Summer rainfall climate)
What is the best sweet corn maize seed to plant? I want the one that can produce bigger corns.
13 Feb 17, John (Australia - temperate climate)
I am in Australia and don't know the varieties you have available in South Africa. I would google search 'sweet corn seed' on your computer. There are three mail order seed companies that I am aware of in your country. They will have a range of sweet corn seed available and each will have details regarding colour, size and sweetness to choose from. I trust someone from your area will respond to your query with some suggestions. Trust this helps.
07 Feb 17, flo (Australia - temperate climate)
Usually crop rotation is done so diseases don't build up in the beds, and also because each type of crop takes different nutrients from the soil. Growing the same crop in the same spot all the time would deplete the soil. Legumes fix nitrogen in the soil, so growing leafy greens to follow would have them benefitting from the nitrogen. Hope this helps...
29 Jan 17, Sue g puttock (Australia - temperate climate)
When i pick the corn of the plants do more corn keep growing or do i just get rid of the plants when all cobs picked
04 Feb 17, John (Australia - temperate climate)
After a corn/maize plant has produced a cob or cobs it will not produce any more. You can cut the stalks off or pull them out of the ground and use them for mulch or plant climbing peas on them - free stakes! Trust this helps
24 Jan 17, Aaron (Australia - temperate climate)
I've had a problem with every corn stalk being chewed open about where the corn would growand also at other places. Im guessing this is by possums or rodents as some stalks are bent over. Anyone else had this issue and can suggest a solution?
05 Feb 17, John (Australia - temperate climate)
Sounds very much like possums or rodents as the 'budding' cob would be very sweet and nutritious. Controlling them is a challenge. There are bark chips of the Quassia tree which should be available online. They can be soaked then boiled to make a very bitter tasting concoction that you spray on. This also works for wallabies on garden shrubs. The bitterness shouldn't affect the cobs as they are inside the husks. Trust this helps.
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