Wednesday, September 21, 2016

One Ton Pumpkin in Colorado?

Will this be the first pumpkin ever grown in Colorado that weighs over 2,000 pounds?  Come find out at Jared's Nursery in Littleton this Saturday.

Sunday, August 7, 2016

What to Do When Your Pumpkin Isn't Growing As Fast As You Would Like

This is one of the things that all growers struggle with when a pumpkin isn't growing as fast as they like.  There are a number of factors that can contribute to slow growth.  Some can be fixed and others cannot.  Genetic factors of course can't be fixed.  Some pumpkins just want to grow slow.  The smallest pumpkin I ever grew was right next to the pumpkin plant that grew my biggest pumpkin ever and both plants got the same amount of water, fertilizer, etc.  

If you don't want to go to the expense of doing a tissue test to find out what the plant has and needs, then trying to give the plants a little more fertilizer isn't a bad idea.  These plants are heavy feeders and they can "bonk," because although there might be a lot of nutrients in the soil sometimes it is locked up or just out of the reach of the roots. 

Doing small, divided doses of additional fertilizer may not be a bad idea, but spoon feed and see how the plant reacts.  Be patient with it.  Over doing it, even slightly, can sometimes have a negative effect on the growth of the pumpkin.  Doing it this way will probably give you better results.

To figure out what the plant needs take a look at the color and growth of the plant.  Potassium can help push the pumpkin along, but low nitrogen or other nutrients can also limit pumpkin growth.  Slow and steady wins the race in pumpkin growing.  So look at everything that could be a limiting factor and do small tests to see what yields you the best results.

Tuesday, July 26, 2016

Greenhouse Geothermal Heating and Cooling for the Giant Pumpkin Patch

I've been doing research over the last couple of weeks for setting up a geothermal heating and cooling system for my new greenhouse and pumpkin patch.  One of the gurus for this setup (Sunny Johns) is right here in Colorado, but unfortunately his website isn't live anymore (read more below).  You find tons of references to it however when reading on the subject.

Basically what I'll be doing is running a bunch of 4 inch pipes under the pumpkin patch about 3 feet down.  I'll then run a pipe to the top of the greenhouse and in that pipe will be a thermostatically controlled fan.  That pipe will go into the soil in one far corner of the patch and attach to those pipes that are running through the soil.  That pipe will then pop out of the soil on the other far end of the patch.

What will happen, during the heat of the day, is that fan will suck the hot air at the top of the greenhouse and run it through the pipes which will heat the soil.  Pumpkin roots like warm soil because it activates the biology in the soil.  Then cooler air will be blown out the other end of the pipe system at the other end of the patch.

During the night, another thermostat will kick on when it gets too cool.   This time the warmed soil with heat the cool night air in the greenhouse warming the greenhouse slightly during the night.  The whole system is very inexpensive to run and efficient.

I own a website design business ( and when I found that the Sunny Johns site no longer existed I decided to try the Wayback Machine.  The Wayback Machine is an initiative where they crawl websites every so often and then store them.  So you can literally see what a website looked like on a specific date.  The cool thing is that the Sunny Johns geothermal site pages mostly still exist on the Wayback Machine so you can still get all of the good information that is posted there.  Visit here.

Friday, July 22, 2016

Some Big Pumpkins in Denver

Went to a pumpkin patch yesterday and saw a couple that could be giants by the end of the season.  One is probably growing at least 48 pounds a day right now.  Weather has been a little warm this summer, but it doesn't appear to be affecting these plants.

Thursday, July 7, 2016

Pumpkin Patch Tour & Greenhouse

A little bummed that I'm going to miss both the Utah club's pumpkin patch tour and the RMGVG patch tour.  The Utah tour is the weekend before we move to Utah and the Colorado tour is the weekend after.  I couldn't be moving at a worse time.

I'm looking at getting this 24x28 foot greenhouse for the new house.  If anyone is familiar with the quality of the Grower Solutions greenhouses please let me know.  I want to make sure I make the right purchase.

Thursday, June 23, 2016

Pumpkin Pollination Time

It is that time of the year.  If you want to grow a pumpkin over 1,000 pounds you should have a fast growing giant pumpkin plant at this time of the year that should be close to being ready to pollinate.  Ideally you want a plant that has a female flower ready to open that is 10 feet or more our from the stump.  What you'll want to do is either cover that flower the nigh before it opens (I like to use a fine mesh bag) or close the flower petals with a rubber band so that he bees can't get inside the flower in the morning before you have a chance to hand pollinate it.  You can tell when a flower is going to open the night before because the petals really yellow up the evening before and become elongated.  After closing up the female flower, cut some male flowers that will be ready to open the next day and put them in water and place them on a window seal in your house.  Early the next morning take the male flowers and take off the petals and rub the stamen around the inside of the female flower to cover it with pollen.  Within a few days you should see that little pumpkin at the bottom of the petals on the female flower growing and ideally, 90 days later, that thing should weigh 1,000+ pounds.

Monday, June 20, 2016

Fertilizer Moving Sale; Everything Must Go

As we prepare to move to the new house, I'm going to offer a 25% off discount code on all fertilizers at  This means an extra 25% off the already lowest prices you'll find on the internet.  Just enter the discount code of 'moving' during checkout to take advantage of this great deal.  This offer will end on July 12th, so stock up now.  Limited quantities of some items are available, so you'll not want to wait.  Place you order today!

Saturday, June 11, 2016

How to Choose Which Pumpkin Plant to Cull when You Double Plant

I like to put two plants into each hoop house at the beginning of the season because I think it increases your odds of getting a good plant.  I got an email today from a grower who double planted and asked for advice on how to choose which plants to go with.  In summary, this is what I told him:

Deciding which plant to cull is a hard decision.  When I'm deciding which plant to go with I like to look at the parents and see how they looked and look at the health of each plant.  Some plants will be aggressive growers, but that doesn't indicate how big of a pumpkin it will grow.  I've heard more than one world record holder say, "It was my third best plant, but once it set fruit the pumpkin wouldn't stop growing."  Because of this I like to find out what kind of traits mama and papa had and see how your plants compare.  If mama and papa were aggressive growers but your plant isn't very aggressive then it might be a less desirable plant.  If mama and papa weren't aggressive growers and your plant isn't aggressive then that might just be its genetic trait.  Skinny vines and thick vines are kind of the same thing.  I love a thick looking vine, because it looks cool, but it doesn't indicate a big pumpkin.  However if mama and papa had thick vines and yours seem kind of wimpy it might be a less desirable plant.

Probably more important than the before mentioned items are things like the color and the overall health of the plants.  Again, a darker color can sometimes be a genetic thing, but I would take a dark green leafed plant over a lime green plant.

If you planted on plant later than another I wouldn't worry too much at this point of the season if that one plant is "behind."  8 days doesn't mean much at this point of the season.  If you are only 8 days behind and the plant sounds like growth wise it might be only 4-5 days behind then two weeks from now the plants might be equals.  What you find is that as far as what will effect pumpkin growth, there won't be much of a difference.  If you are pollinated by June 24-28th you'll be in great shape and more than likely both plants would have females pollinated by then.  The key is to have a plant big enough by the 24th and it sounds like that will be the case.  Where the rubber hits the road is around day 24 after pollination. That is when that plant needs to be fully primed and as big as possible so it can throw all of its energy into that pumpkin from days 24 to day 40.

The reason that 8 days different doesn't mean much in terms of the pumpkin is that the 8 extra days only really count at the end of the season when the pumpkin is only putting on 4-5 pounds a day.  That basically means 8 days now means 32-40 pounds later.  In that day 24 to day 40 you want that pumpkin doing close to 40 pounds a day so that is the make or break part of the season in most cases.

For the two plants from the same seed, if all things are equal, find out if it is the 1530 Gehweiler or the 1067 Kent that has the thicker vines and go with the one that has the traits you like the most.  It looks like both of those plants have grown similar progeny so this one is a push.

Last thing to look at (and it is the least obvious) is the root system on the plants.  If you are running into roots when burying vines father out on one plant than the other, go with that plant. 

Thursday, June 9, 2016

The Proof is in the (Fertilizer) Pudding

Early this spring I gave my Jupiter Beard plant some RAW brand fertilizers and then again just before flowering.  In years past this plant would be about 3 feet tall.  Look at it now!  The weather has been relatively good this year, but not ideal, but the plant has just exploded.  Nearly as tall as my 10-year-old son.  I have to attribute at least some of it to these fertilizers.

Sunday, May 22, 2016

Greenhouse for the Pumpkin Patch

Today's weather makes it feel more like pumpkin season.  Flowers are just about to go into full bloom and the weather has finally been nice on the weekend for once in Colorado.  Been busy with selling the house, but on occasion I look around for greenhouses for the new place.  I'm looking at this model:

I'll get the roll-up sides and a fan to help cool it down in the heat.  If anyone has any other suggestions, I'd love to hear them.

Friday, April 29, 2016

Don't Plant Your Pumpkin Plants in Cold Soil

If you haven't already, put your hoop house over the area that you will be planting your pumpkin plants or put down some clear plastic on the soil to help heat it up.  You don't want to take your plants from the pots in put them in a cold soil.  Cold soil has less biological activity making it harder for the plants to get at nutrients.  This will sometimes stunt the growth of the pumpkin plant and possibly put it into shock.  Warm soil, a little B-vitamins and a touch of kelp will help the plant transition to the soil faster, making for better growth.

Sunday, April 3, 2016

RAW Phosphorous Test Results on Giant Pumpkin Plants

When I can, during the off season, I love to try to test different things to see if what the scientist say and if what the marketers say is true.  I mentioned a few weeks ago that I was going to test to see if adding a very little RAW Phosphorous to the giant pumpkin plants would increase root mass as advertised.

I should note that if these were plants that I was going to actually grow pumpkins on I would have done things a little differently.  I would have gave the phosphorous to the plants once they were in the ground rather than in the pots and I would have got these plants in the ground with hoop houses covering them about 4 or 5 days earlier.

I wouldn't say these tests were scientific, but adequate enough to find some results.  The most definitive results that I have is not about the RAW Phosphorous but on the 747 Johnson seed.  Both of the plants pictured below are from the 747 I did not start them in ideal conditions.  Temperatures were never over 71 degrees and I didn't give them much care.  However, they were aggressive growers with big leaves for only being 3 weeks old, as you can see. The root systems on both plants were also above ordinary.

The science says that RAW Phosphorous will produce a 15% larger roots system.  I gave both plants the same amount of water and both where in the same environment.  Looking at the pictures below I would say visually it looks like the 747 that was given the RAW Phosphorous on the left has a slightly bigger root system on it.  More tests would be needed, but it looks like 15% could be possible. I wish I had taken the plants out of their pots about a week earlier when the roots weren't quite as developed.  It would have made it a little easier to visually see the differences in the root mass.

It should be noted, that if you look at the pictures of the plant when I gave it the phosphorous I purposely gave the plant that was smaller than the one that didn't get phosphorous and it clearly caught up to the other plant.

Wednesday, March 23, 2016

RAW Phosphorous Testing on Atlantic Giant Pumpkin Plants

You may have seen me post here previously that the RAW brand phosphorous has been shown in tests to improve root mass by 15 to 20%, so I decided to do a little test.  I planted two 747 Johnson seeds about 10 days ago and today I gave the smaller plant on the right a touch of RAW phosphorous in water and to the plant on the right I gave it just water.  In two weeks or so, we'll take the plants out of their pots and compare the roots on each plant to see how it has done.  I'll post the results here on the blog.

Friday, March 11, 2016

Start the Pumpkin Season off Right with A Fertilizer Program

I've found that when I go into a season with a plan it shows on the scale at the end of the season.  One thing I've done for a number of years is put together a fertilizer program for my upcoming season.  Certain fertilizers should be used at specific times, so by creating a road map and plan at the beginning of the year you can make sure your getting the most our of your fertilizers.

During the season I deviate from the plan that I've linked below, depending on what the plants are telling me, but for the most part this is exactly what I'll do during the season:

Wednesday, March 9, 2016

Spring is in the Air

Even though I'm not going to be growing any competition giant pumpkin plants this year, I can't still not get excited for spring.  This week I'm going to start two 747 Johnson seeds, just to see what the plants look like.  Although I didn't get a massive pumpkin that these seeds came from last year, it wasn't the plants fault.  The cross for this plant is interesting so I hope a few people will grow it this year and I plan to grow it next year.

Friday, February 26, 2016

New Domain Name, Same Great Website & Save Now!

We are changing the domain name of this website from to  The vast majority of my readers are outside of Denver, so to properly reflect that we are changing the domain name of the website.  To celebrate the domain name change, we are offering 10% off your entire order on from now until March 6th.  To get this offer just enter discount code pumpkin10 during the checkout.  Take advantage of this great offer to stock up now.  Spring is just right around the corner!

Wednesday, February 10, 2016

Taking 2016 Off from Pumpkin Growing

It is with some sadness that I announce I won't be growing any pumpkins this year.  It looks like we will be moving to just outside of Park City, Utah this summer.  We love Colorado and have deep roots here, but an opportunity has arisen that my family doesn't want to pass up. 

I'll still be doing my website design business with my same development team, just relocating the headquarters.  I'm also still planning on growing giant pumpkins and hope to setup a greenhouse this fall for growing.  The altitude of my new home is about 400 feet higher than here in Denver. 

I'll be continuing my blog.  My plan is to try to keep the clone plant that grew the 2008 Neptune going all summer and winter and use it as a pollinator next year.  So I'll write about that and about starting the new pumpkin patch.

I'll miss the great weigh-offs here in Colorado and the RMGVG community however, but look forward to meeting the growers in Utah.  They seem to be a great bunch based on the movie that they were in.

Saturday, December 26, 2015

Keeping the Water Perfect in the Pumpkin Patch

In two different seasons I've lost pumpkins due to irrigation problems.  I'm hoping I've put that in the past with this high tech contraption.  The Plant Link probe constantly monitors the soil moisture levels and will send alerts to an app on my phone and via email if the moisture isn't ideal.  I'm hoping this will not only keep the plants out of trouble, but will help me dial the watering in better.

Thursday, November 26, 2015

Black Friday Giant Pumpkin Seeds, Fertilizer & Video Deals

I've added the 747 Johnson seed to today and have some specials going this week only.  Between now and Sunday, November 29th, get 20% off your order of giant pumpkin fertilizer, seeds and videos. Use discount code 'thanksgiving' in the checkout in order to receive the discount.  Best deals of the entire year!

Tuesday, November 10, 2015

Finally Amended & Tilled the Pumpkin Patch

Between weather, sickness and work I haven't been able to get into the patch and clean it out.  Finally got to that this week and tilled the patch this evening.  I tilled in alfalfa pellets, fallen leaves with grass clippings,  gypsum, humic acid, peat moss, calcium, iron, manganese, chunks of pumpkin along the cover crop I planted on the southern end of the patch back in August.  The best thing you can do for your pumpkin next year is to prepare the patch now in the fall.

In Colorado the winter temperatures are typically warm enough that what I have tilled into the patch will be mostly broken down come spring time.  I didn't get a cover crop in early enough so I'll put in a cover crop as soon as I can in the spring to get it going.  Night time temperatures are probably too cool now to see the patch and get much of anything going.

The clone plants are all rooted and alive.  One is starting to take off.   Got a green house for one of the plants, but if anyone knows of another green house that I can send another one of the plants to please let me know.