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

18 Dec 12, adam (Australia - cool/mountain climate)
Hmmm, Ryan. Corn, as you know, pollinates when the dust from the tassles at the top falls on the silks. Often in the sub tropics, the air is too moist and makes the dust fall straight down to the ground, and it's viability is very short. Maybe you could cut off a tassle carefully, put it straight into a plastic bag, bring it inside with the bag open, just to get rid of a bit of moisture, and then hand pollinate by shaking the bag over the silks of the other corn, or getting a brush and lightly brushing it onto the silks.
10 Nov 12, Torben Tilly (New Zealand - temperate climate)
Where can one buy Purple Corn seed in New Zealand?
21 Aug 18, Philip Lim (New Zealand - temperate climate)
I have some purple corn seed if you are looking for some. Let me know your address and i will post some to you.
05 Oct 12, Phil (Australia - sub-tropical climate)
what r the diseases do i have to look out for whiloe growing sweet corn. also in our area most of our plants grow very well yet as soon as the brocilye, colliflower, and cabbige start the bugs get them, do you have a remidy to cull them?
17 Sep 12, digger (Australia - temperate climate)
Will kangaroos eat sweet corn as it emerges from seed? We plan to grow more than will fit inside the fenced vege patch
23 Sep 12, wayne (Australia - temperate climate)
I am planting corn in the next couple of weeks. Is it a good idea to stagger planting , lets say at two week intervals. Idea being it wont all mature at the same time. Any ideas on that anyone?
15 Oct 12, billy (Australia - temperate climate)
Hello Wayne, It would be a good idea to stagger the planting, as they all wont be ready at the same time, i have been growing corn most of my life, my father used to have an obsession with corn and now i believe i do just not to his degree ha ha ha, Let me know how ya crop turns out Bill Enhard Of South Australia p.s hope it all goes well lol Bill Enhard x
31 Jul 12, Brian Vendt (Australia - sub-tropical climate)
Had a good crop last summer.This year,I have planted the corn into punnetts,without much success.I have a new garden for the next lot,and I will sow directly into the ground.Is it a good idea to soak the kernels overnight,to soften the seed.Maybe mix in some liquid seaweed?Would the same advice apply to bean seeds?Thankyou.I live on the Gold Coast.
16 Nov 12, Andrew S (Australia - temperate climate)
Liquid seaweed won;t hurt..I added a little blood and bone to the mix..seemed to work real well.. So well in fact the ducks took a liking and nearly wiped out my crop. A few survived..so there wil now be a bit of a stagger plant coming up..!
19 Aug 12, (Australia - sub-tropical climate)
In reply to your question,yes i soak all my bean seeds,as it tends to speed up there germination.I live in Nth NSW
Showing 301 - 310 of 417 comments

If you can stand your pot near a sunny window, you might be able to keep the sweetcorn growing. Protect it from cold temperatures and make sure it has plenty of light -

- Liz

Please provide your email address if you are hoping for a reply


All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate App

Put GardenGrow in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join 60,000+ gardeners who already use GardenGrow and subscribe to the free GardenGrow planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About GardenGrow | Contact us | Privacy Policy

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. GardenGrow 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.
We cannot help if you are overrun by giant slugs.