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

07 Jul 15, Steven (Australia - tropical climate)
Sounds like they weren't pollinated
28 Feb 15, Francis (Australia - temperate climate)
Can you get coloured sweet corn in Australia? If so, where? They have heaps of types overseas, but the only coloured types I can find in Australia are not sweet corn.
23 Dec 15, Jo (Australia - sub-tropical climate)
Yes you can get diffrent colours, try ebay (check the seller is in Australia). I'm growing Inca purple corn that I bought from a local market... It's huge, I'm so excited!
20 Jun 17, Maurice (Australia - temperate climate)
There are several varieties of coloured sweet corns available in Australia, please never buy them from ebay as you will rarely get what you order. Google search
07 Feb 15, john (Australia - temperate climate)
my corn ears are white and small. why have i done wrong?
15 Feb 15, Leah (Australia - sub-tropical climate)
Perhaps they haven't been pollinated enough or gotten enough water.
07 Jan 15, Rhonda (Australia - temperate climate)
I'd like to know how to dry the corn - it'd be good to have it on the cob for convenience. Some internet advice includes drying in the oven for extended periods of time. Can it be air dried?
21 Dec 14, Mardi (Australia - temperate climate)
Should you cover the roots as they appear above the soil as they grow
30 Dec 14, Di (Australia - sub-tropical climate)
I cover the roots with extra compost or soil and mulch. It seems to help support the corn. Also don't forget to rub your hands through the tops to help the pollination process.
11 Dec 14, Javier Ibarra (Australia - temperate climate)
Does anyone now where to buy kernel in Victoria to make corn flour? I appreciate your time and assistance! Javier
Showing 161 - 170 of 328 comments

I understand your remark. - however you need to take into account that Pioneer (an excellent source for seeds) is located in Johnston, Iowa - and if I'm not mistaken has always been there- so yes they will know which seeds to sell you- that's real Expert advice. Additionally if you buy at your local co-op they probably stock only seeds that grow well in the area. They'll even tell you when and how to plant,care for, and harvest your crop. In other words they are making the variety, soil temp decisions for you. -and saying plant this, at such and such a time. I live in an area where the conditions change in less than 10km. - Vancouver Island - soil temps, wind chill can vary a lot so understanding this stuff can make the difference between a lush garden and a half dead garden. Planting, say, tomatoes outdoors can be delayed by 6 weeks if your getting a lot of night time wind chill (near the ocean or at a higher elevation). Your inland, flat, and have very uniform growing conditions, Your also in the corn discussion- which the breadbasket states (of which your state is one of) having been growing corn for longer then I can even guess at (250 years- and the Native American Indians before that)- even in Canada I know some of your sayings 'knee high by the 4th of July' which I'm guessing every breadbasket school child knows- so yes I Imagine you know when to plant corn. There are people who live in microclimates -and they may not have access to consultants (like your local co-op) that give information freely. So yes, they need to understand soil temps. Etc. Aditionally, person might want to grow a variety of something that is different (mail order) from what their local garden center has decided to sell. In which case they either investigate before they buy, or buy, plant and cross their fingers.

- Celeste Archer

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 Gardenate 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 Gardenate and subscribe to the free Gardenate planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | 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. 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.
We cannot help if you are overrun by giant slugs.