📌 Quick Summary: Planting Fresh Pumpkin Seeds
- 🎃 Straight to the Soil: Unlike tomatoes, pumpkin and squash seeds do not need to be fermented to remove a gel coat. You can plant them immediately after scooping them out of the fruit.
- 💧 The Float Test: Fresh seeds from a grocery store or storage pumpkin can be unpredictable. Drop them in water for 24 hours. Throw away the floaters (they are empty), and plant the heavy seeds that sink.
- 🌡️ Heat Treating for Female flowers: If you plant seeds from a very recent harvest, the resulting vine tends to produce mostly male flowers. To trick the seed into producing female (fruiting) flowers earlier, soak the seeds in warm 104°F (40°C) water for two hours before planting.
I just cut open a pumpkin today. The moment the knife went in, drops of sweet juice literally started seeping out. The color and the smell are absolutely amazing. It’s an incredibly good pumpkin, it’s just a shame I don’t know the exact variety name.Do you guys think it’s okay to plant these fresh seeds right now?
gala7496 (Galina) wrote:
Do you guys think it’s okay to plant these fresh seeds right now?
Galya, what’s stopping you? Just put them in a glass of water first. Pick out the heaviest ones that sink straight to the bottom and plant those.
gala7496 (Galina) wrote:
Do you guys think it’s okay to plant these fresh seeds right now?
Why start them now? It’s too early. They grow fast. Once they sprout, you have to get them into the ground within two weeks. Do you really have the setup for that right now? I just direct sow my pumpkin seeds straight into the dirt and they germinate perfectly.
Galiy (Galina) wrote:
Why start them now? It’s too early.
Galina, we live in completely different climate zones! I have to start absolutely everything indoors as seedlings, otherwise I will never see a harvest. Last year, around this exact time, I was starting my pumpkin seeds using the paper towel baggie method, so I’m doing the same this year. When the warm days finally arrive in May, I will plant the seedlings outside under a spunbond row cover.
gala7496 (Galina) wrote:
…I have to start absolutely everything indoors as seedlings…
I start mine as seedlings too, but I don’t sow them until May, right in the cold frame. If you’ve grown pumpkins before, you have the experience. I just thought you wrote earlier that you had never grown them before! 📝
Galiy (Galina) wrote:
But what was your actual question about planting the seeds?
Galya, last year I bought commercial seeds, I didn’t save my own. I got a huge harvest, and the pumpkin in the photo is actually one of mine! It survived in winter storage all the way until the end of April, and I still have two more left.
My question was about how to save the seeds. Do I need to ferment them in water like tomato seeds? That’s what I was asking. Ludmila answered it for me. I dropped the fresh seeds in water yesterday, and this morning I saw that exactly one seed had sunk to the bottom! I am going to plant it and run a little experiment.
gala7496 (Galina) wrote:
Last year was my very first time growing pumpkins!
Galina, just a heads up: if you are planting “fresh” pumpkin seeds from a very recent harvest (like your 2020 storage pumpkin), you should heat treat them first. Otherwise, it will take a long time to get female flowers and fruit set. You can just throw the fresh seeds into a thermos with 104°F (40°C) water and let them sit in the heat for a couple of hours before planting.
Zulfiya wrote:
…you should heat treat them first…
Oh yeah, sure! Cook the “male” parts right off them! The “females” will survive the heat just fine, they don’t have anything dangling that can fall off anyway! 🤣🕺
MADanilich (Andrey) wrote:
Oh yeah, sure! Cook the “male” parts right off them!
Male pumpkin flowers always appear early and in huge numbers regardless. It’s incredibly rare to have a shortage of male flowers.
Zulfiya wrote:
Male pumpkin flowers always appear early and in huge numbers regardless.
Oh boy, it would take way too long to explain the actual biology behind this… I’ll just leave a link here, please read up on it at least a little bit. Zucchini and pumpkins belong to the exact same cucurbit family.
Otherwise I’m gonna start telling jokes… I have two of them, but they are a little bit… inappropriate.
Unsolicited advice (whispering in your ear): It’s better to study scientifically proven agronomic concepts rather than passing along weird gardening folklore… 🌻
👨🔬 Editor’s Botanical Note: Heat Treating Fresh Pumpkin Seeds
Andrey and Zulfiya are arguing over a very classic debate in the cucurbit (squash/pumpkin) world! Let’s clear it up:
Pumpkins produce separate male and female flowers on the same vine. The males always open first. However, it is a scientifically proven fact that seeds from a very recent harvest (“fresh” seeds under 1 year old) have a strong tendency to produce excessive male foliage and flowers, heavily delaying the appearance of female (fruiting) flowers. Commercial growers bypass this by storing pumpkin seeds for 2 to 3 years before planting them, which naturally ages the seed and shifts the hormone balance.
If you don’t have 3 years to wait and want to plant fresh seeds (like Galina), Zulfiya is absolutely right: Heat treating the seeds acts as an artificial aging process. Soaking fresh pumpkin seeds in warm water (around 104°F / 40°C) for a few hours or keeping them in a very warm, dry spot near a radiator for a month prior to planting stresses the seed just enough to trigger early female flower production! So no, it’s not weird gardening folklore – it’s actual agronomy!
