Keep your garden growing - see what to plant right now

Growing Marrow

Jan F M A M J J A S O N Dec
    S S P P            

(Best months for growing Marrow in USA - Zone 5a regions)

S = Plant undercover in seed trays P = Sow seed

  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 68°F and 95°F. (Show °C/cm)
  • Space plants: 35 - 47 inches apart
  • Harvest in 12-17 weeks.
  • Compatible with (can grow beside): Peas, Beans, Onions, Sweetcorn
  • Avoid growing close to: Potatoes
  • Young marrow
    Young marrow

This is a large, well grown version of zucchini/courgette. Skin maybe light yellow or white. Grow on raised mounds of earth/compost. Mulch to retain moisture and reduce weed growth.

Powdery mildew can be a problem especially in humid weather.

Culinary hints - cooking and eating Marrow

Good, cut in thick slices, seeds removed and stuffed with mince or spicy vegetable mix then baked in the oven

Your comments and tips

11 Jul 09, jackie (Australia - cool/mountain climate)
approx how many marrows do you get from a single seed?.
24 Aug 10, Amanda (Australia - temperate climate)
Just the one plant from a single seed.
15 Jan 10, norsman (Australia - temperate climate)
Where in Australia can I get marrow seeds from? You know, the big ones. I want to make some marrow rum as well as eat them.
09 Feb 10, mel (Australia - temperate climate)
how long will it take to harvest marrow
09 Feb 10, Liz (New Zealand - temperate climate)
Mel, harvest will take about 12 - 16 weeks from seed sowing
02 Mar 10, Monica (Australia - sub-tropical climate)
I've tried to grow Spaghetti Marrow, was succesful with lots of greenery, strong vines and even flowers, but they just fell off without bearing any fruit at all! why?
04 Mar 10, Gerry (Australia - cool/mountain climate)
Monica, this is usually due to poor pollination (it happens with Zucchinis too). Growing more than one plant can help or you shake the flowers or even hand pollinate with a small paintbrush once every few days (just wiggle it round inside the flower then move on to the next flower, etc).
04 Mar 10, Terry (Australia - sub-tropical climate)
I found a great video that addresses this problem at www.thegardenguru.com.au (look for it under zucchini)
16 Mar 10, "a desperate subscriber" (Australia - temperate climate)
How do I obtain some marrow seeds in Australia?
30 Jun 10, Daniel (Australia - sub-tropical climate)
Great question - I have been looking too. If you get an answer I would love to hear about it. :)
Showing 1 - 10 of 33 comments

Monica, this is usually due to poor pollination (it happens with Zucchinis too). Growing more than one plant can help or you shake the flowers or even hand pollinate with a small paintbrush once every few days (just wiggle it round inside the flower then move on to the next flower, etc).

- Gerry

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

Buy the app for iPhone/iPod, iPad or Android and support Gardenate

Planting reminders

Join 30,000+ gardeners who rely on Gardenate. Subscribe to our free 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.