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Subject:  Fertilizing for big head sunflowers

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Date Posted

n d fan


What do you feed these big boys and what stages

4/23/2018 6:25:14 AM

Henry-the giant pumpkin grower

Topsfield, MA

I fed them fish and seaweed last year and some urea mate, they seemed to really like it.

4/23/2018 6:48:18 AM

Henry-the giant pumpkin grower

Topsfield, MA

I started feeding when they got about a foot tall

4/23/2018 6:48:29 AM

Pumpkinman Dan

Urbandale, Iowa

When I prepare the planting site for both tall corn and tall sunflowers I add a lot of extra composted manure. After that, they get pretty much the same ferts as giant pumpkins, but I apply some extra nitrogen through out the growing season.

4/23/2018 10:57:21 AM

Fred Bear.


Deep taproots require a deep hole the deeper the better. Fill with a good quality compost and add extra long lasting ferts that promote stalk growth. GO to a higher phosphorous ratio when its ready to flower for bigger heads.

8/29/2018 9:43:04 PM



Actually the giants aren't a taproot at all, learned this the last storm, and transplanted a few to my fair display. They say they don't transplant well either, and mine did just fine fully grown, took the little 12" root ball about 5" deep and pulled them right out!

I did the same as pumpkin fertilizers, mist at night with seacrop 16 added a little nutri green 23" head

9/25/2018 3:19:21 PM


Brisbane Australia

Where would I finds Big headed sunflowers in Australia?

6/13/2020 10:15:08 PM

Total Posts: 7 Current Server Time: 10/23/2020 6:22:51 PM
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