Fertilizer for cantaloupes & watermelons

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EdieJ
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Location: North AL Zone 7

Fertilizer for cantaloupes & watermelons

#1

Post: # 25720Unread post EdieJ
Thu Jul 16, 2020 12:08 pm

So my melons are all vining nicely and loaded with flowers - all males. What (if any) fertilizer should I put on them to get females to pop out?
North Central AL (mountains)
Zone 7

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Nan6b
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Location: Pittsburgh, PA

Re: Fertilizer for cantaloupes & watermelons

#2

Post: # 25735Unread post Nan6b
Thu Jul 16, 2020 4:02 pm

In some squashes, it's all males at first, then the females start coming along too. Might not be anything wrong. But I have no experience with melons (this year is my first) so I'm looking forward to replies by those more knowledgeable.

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Shule
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Location: SW Idaho, USA

Re: Fertilizer for cantaloupes & watermelons

#3

Post: # 25765Unread post Shule
Thu Jul 16, 2020 7:08 pm

Yeah, no female flowers at first is normal (although it's not always the case). For the most part, you just need to wait. They should come. If you want fertilizer that might help, I recommend monopotassium phosphate or monoammonium phosphate. Phosphorus helps plants mature, helps with flowers, and even helps fruit ripen faster (so I've read and believe). Melons (C. melo only) like supplemental potassium a lot (watermelons don't seem to benefit nearly as much from it); so, monopotassium phosphate is probably the best choice of those two, if you're wanting to experiment with phosphorus. Potassium can help with fruit size/quality, plant strength, heat-tolerance, and other stuff.

I usually give my C. melo melons potassium (monopotassium phosphate, or potassium sulfate with monoammonium phosphate) at transplant time.

Anyway, you don't need to add extra phosphorus, but IMO, the plants will probably like it, and probably flower and fruit more.

Watering the plants should help, too. I like to practically dry farm my melons (although I do water if I deem it particularly important), but they do grow more with more water, in my experience.

Extra sun helps, too. If the plants are partially shaded, they may take longer to get ripe fruit.

I wouldn't worry.

If you really want to give your C. melo melons a boost, I recommend supporting at least the first two or three feet of the plant with such as a cage (wider than a tomato cage). It seems to boost production in my garden, anyway.
Location: SW Idaho, USA
Climate: BSk
USDA hardiness zone: 6
Elevation: 2,260 feet

EdieJ
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Joined: Sun Jan 05, 2020 8:34 pm
Location: North AL Zone 7

Re: Fertilizer for cantaloupes & watermelons

#4

Post: # 25772Unread post EdieJ
Thu Jul 16, 2020 8:23 pm

[mention]Shule[/mention] Thank you. Since we're already the middle of July and the vines are at least 4' long with only males, I wasn't sure if I was doing something wrong. I'll do my best to be patient but I think I will try the potassium-based fertilizer. Thanks!
North Central AL (mountains)
Zone 7

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