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 20°C and 35°C. (Show °F/in)
  • Space plants: 90 - 120 cm apart
  • Harvest in 12-17 weeks.
  • Compatible with (can grow beside): Peas, Beans, Onions, Sweetcorn
  • Avoid growing close to: Potatoes

Your comments and tips

07 Sep 18, Mike (Australia - sub-tropical climate)
Look on the internet and try and work out what you have. Hand pollinate the female flowers and see what vegie you have.
04 Sep 18, Mike (Australia - sub-tropical climate)
Jane - blossom end rot, use 1-2 teaspoon of Epsom salts in 8-9l of water and apply to the soil. The yellow fruit - have they been pollinated and starting to grow the marrow. If the female flower of marrows, cuies, melons, pumpkin are not pollinated the little fruit will turn a different colour and shrivel up and die. The white spots could be a fungi or disease from damp conditions. Water in the morning so the plants and fruit dry out quick.
05 Sep 18, Jane (Australia - temperate climate)
Mike - my apology. I don't know how I missed your reply post. Re: The small yellow fruit that came off was the beginning of a marrow (I think?).On second thought - upon rereading your post, I have just realised that small,bulbous-like 'fruit' was a female plant and that, as you point out, it was not pollinated! Aha! A light comes on. So yes, that's what happened. What a vast difference between knowing and learning. We are on tight water restrictions (fortunate to have a drop of water!). I was using tank water in the afternoon although I have stopped the late afternoon watering.The leaves have improved 99% and marrows are forming which is so exciting. My one concern, perhaps, is that they might be adversely affected if they grow on the ground i.e. the ground resting side might soft,go brown and invite bugs/rot or something when they (prayerfully) reach that stage. Not sure what to do to help them.Watching them. When I water in the mornings should I water the foliage or just the ground? And will it be better to use sugar cane mulch? I am using dry leaves and grass cuttings (from when drought had not hit so hard). Thankyou for your post.Appreciated.
07 Sep 18, Mike (Australia - sub-tropical climate)
Do you have bees in your yard. If not read up about hand pollinating. Most of these vine crops have male and female flowers on the one plant. Put some mulch under the marrow if you are worried. Any thing will do. But marrow zucchini grow so quick you shouldn't have to worry. As much as possible water the soil. By watering in the morning the wind and sun will dry plants quickly.
22 Aug 18, Jane (Australia - sub-tropical climate)
Just looking at the graph depicting the brst times to grow marrow. Looks like I sow'd and planted early. *Why is it important to sow and plant at the right time? Thankyou in advance.
23 Aug 18, Mike (Australia - sub-tropical climate)
FROM the bottom of the page. -"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." To sow around the best time is to give yourself the best chance to produce a good crop. Like you wouldn't plant something in summer if it says to plant in winter.
31 Aug 18, Jane (Australia - sub-tropical climate)
Mike, thanks for the reminder. I have read and occasionally reread the above.Invaluable. One of my marrow fruit turned yellow (had something at the flower end that looked like blossom-end rot that tomatoes can get) and came off while some of my leaves (Melbourne cream, Winter Squash Blue Hubbard) have small white spotty blotches on them . I cut them off and disposed of them in sealed zip bags but it's disappointing. Can I treat them? Thnx in advance.
22 Aug 18, Jane (Australia - sub-tropical climate)
Anna,sadly I didn't get an answer from you. Never mind. I hope you sorted your marrow 'trellis'. I planted half a dozen out and notice there is fruit forming. Exciting for me as I haven't seen or eaten the old marrow since childhood. They are spreading out and starting to climb up the fence. Similarly, zucchini. Jane
06 Jun 18, Michelle (Australia - sub-tropical climate)
Something is eating my marrow plant, can I lift it off the ground and tie it to a wire mesh fence? Thank you
02 Sep 18, Jane (Australia - sub-tropical climate)
Michelle, this may or may not be relevant. When I saw the word 'wire' in your post, I thought to mention a small marrow about the size of a tennis ball that is growing on my vine. It began climbing up a temporary wire fence and I let it go as I didn't want to disturb it. Yesterday, I noticed that the said marrow and the top horizontal wire of the fence were firmly pressed up against one another. The little marrow seemed almost grafted on. I gently eased the marrow away from the fence but it kept gravitating back to the fence following the direction of the extended vine. I carefully inserted a piece of unused (synthetic type) flyscreen between the fence top and the marrow and then loosely draped the flyscreen along the top of the wire fence in hope that I can find a more permanent solution. Failing which - ? C'est la vie. I have seen images of wire trellis structures bent into arches etc and thought wire was a good idea. However, I am now thinking I could be wrong and that wire might work to do anything but ruin the fruit? Do you find wire works without an adverse effect? Enjoy yr marrow! J.
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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.
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