Experimenting in September With Vegetable Seed Planting

Fall planting time is nearly here in my area and I’ve begun to sow seeds already. Although the weather is hot, I’m hoping the seeds will grow.

I live in east, Central Florida, which is growing zone 9b. It is September, and I have planted a few different vegetable seeds as a trial. I don’t know if the weather is too hot for them. Last year I waited until October. So far, I have seen some nice sprouting.

Here’s a list of the seeds I have planted, and where they were planted (in ground or pots). They are all growing, but some look better than others.

  • Daikon radish – these seeds were put into the ground.
  • Cucumber – first set of seeds didn’t do much, so I’ve planted more from a newer packet. (in ground)
  • Carrots – in fabric bag
  • Texas Grano onions – will probably have to re-plant in October (grow box)
  • Shallots – barrel raised bed
  • Seminole pumpkin – edge of Vegega to hang over the side.
  • Golden beets (fingers crossed these do well) – in grow box.
  • Tomatoes – cherry and Mortgage Lifter (normal size) – both in fabric pots

The summer months have been unusually dry. Now, we are getting lots of rain. I only hope it won’t be too much for my seedlings.

This time, I purchased multiple seed packets from my favorite online places. That way I can experiment and see if things will grow this early without really losing much. I have a lot more seeds, which I will plant in October.

The beds are not completely ready, even though I have tried to be organized. My usual problem is a lack of dirt and compost. I buy and buy, but it gets used up so quickly. I still have time, because some of the seeds I planted did not do well. The Tatsoi, arugula, and broccoli will need to be planted again in October.

Each of my square grow boxes needs an overhaul. This means digging out all the dirt, drilling holes in the bottom and re-filling. I’ve done about half, but have three, or four boxes left.

Grow Box Refurbishing

The grow boxes I purchased have a drainage panel near the bottom. They also have a tube that reaches up through the dirt where watering is supposed to happen. The idea is to fill the bottom with water so it can be pulled up by the roots of the growing plant. There are side vents for water overflow. (When you tip the box and no water comes out, it could be because the bottom is full of dirt.)

The idea is good, but flawed. Seeds need moisture and must be watered from the top in this big box. It is unavoidable that dirt will sift through those drain holes. If roots get long, they can clog the base also. Even if you keep the drain system in place, cleaning out the entire box is advised. (Raccoons actually pulled up one of my drain pipes, and it can’t be put back without emptying the box.)

The boxes are still very nice and sturdy. They come with wheels, which is really helpful if the box is on a deck or patio. I will continue to use them, but without the drain panel. Instead, I am drilling holes into the bottom of the box itself.

Last April, one sweet potato slip was planted into a grow box. It grew like mad and gave me some funny looking sweet potatoes. There was not enough depth, but I was desperate for space when I planted it. Once I began digging out the sweet potatoes, I realized that dirt had filled up the water reservoir – and I found a few small sweet potatoes down there as well!

Now I am going through all my grow boxes to empty the dirt, remove that screen, drill holes in the box, and re-filling for planting.

Filling the Grow Box

Any time a grow box or fabric pot needs filling, a combination of products is needed. First, drainage should be addressed. For the box, I used a thick layer of pine straw (literally long pine needles) in the bottom. Then, I added some granite stones. After that I mixed potting soil, compost, and perlite, along with some bone meal to create a good growing compound.

The new idea I had, was to put a layer of coconut coir on top of the dirt before I plant the seeds.

One last suggestion is to add earth worms! I have them in all my boxes, raised beds and fabric bags. I found them in the yard and gave them a new home. They tend to multiply and make the dirt loose and fabulous!

Problems Planting in the Ground

I’d love to have rows and rows of vegetables growing, but I don’t have the space. Also, I have overnight visitors (raccoons and armadillos) who continually dig up the ground. Each morning I check on things, and usually there are numerous holes randomly dug all over the garden.

My small garden area
My backyard, September 2024

In order to resolve this problem, I will need to buy more raised beds. I’m hoping for a winter sale because they are expensive. It will be too late to use the beds for this year, but I can work on getting them ready for next fall. Filling those beds takes time.

Amazon Links to Some of the Products I Use

I am an Amazon affiliate, which means these links can provide a small income to me if someone clicks the link and makes a purchase. It does not affect the price of the item.

  • Grow boxes. If you have read this page you will see that I decided to not use that drain. It works well for a while, but the dirt eventually clogs up that space, and there is no drainage after that. Without proper drainage, plants will die.
  • Perlite, organic – loosens the soil, and is especially beneficial when beginning with new dirt. Once the dirt becomes really good – from compost, previous roots, and amendments – it should be naturally loose.
  • Bone meal, organic – helps growing plants create strong roots.
  • Coconut Coir, organic – good for water retention and starting seeds. It does not clump together, so used by itself, not good for transplanting seedlings. Mix with potting soil, or use on top of dirt to start seeds (see my photos above).
  • Garden plant tags – I have purchased two packs of these tags and they are great! The raccoons have not pulled them up. The writing stays. Just what I needed for seed planting.

Are you growing anything in September? Have you begun your Fall growing? It is the best time of year to grow in my area, but I may be starting a little too soon. What do you think?

vegetables divider separator

More about my garden journey

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Compare: Soil, Site and Seeds

When something doesn’t grow well from seeds, it’s easy to blame bad seeds. But take into consideration the location of the planting. Does the site have enough sun, or too much? How is the soil? Were amendments added and were they the right ones needed?

I’m not much of a soil tester – okay, I never test my soil. This is probably a mistake, but I’m not ready for that yet. If nothing grew, I would blame the soil completely, but I have had lots of success. I’m not ready to check my soil.

Soil

When the same types of seeds are planted at the same time, but in different locations, comparing growth should tell me something.

In the case of the radishes, which I planted only because I happened to have a packet of seeds, some did way better than others.

radish growing under an eggplant in the garden
Radish under the eggplant
radishes growing in a box outside
Radish in the grow box

The radishes in one of my grow boxes have become very large. I have already eaten one small radish. None of the other radish plants, which grow everywhere in the garden and other boxes, are nearly as big. Most of them get the same amounts of sunlight, so it figures that this one specific grow box has some very nice dirt.

Lettuce was growing alongside these radishes, but it was from seeds I had saved, and the lettuce was bitter so I pulled it up. Now I have carrot seeds planted.

The Carrot Experiment

The carrots which were planted in my first choice bed are doing poorly. I choose the tallest grow box so the carrots would have lots of room for rooks. I had loosened the soil, and added some good stuff. I had high hopes, but they are barely growing.

Carrot seedlings after one month, alongside borage and a pineapple. The borage is not doing well either, so soil problems?
carrots growing in the raised bed

The carrot seeds were planted just about a month ago. According to the packet, they will be ready in 65-75 days. It is hard to believe that these tiny things will be ready to eat in just over a month’s time! I seriously doubt it.

My second carrot planting is in that box with the radishes. I am very sure that the soil is good. If the carrots still don’t grow, I will blame the seeds. The weather is cooler now, and both spots get good sun.

Growing Sites – Choose Many

If you are unsure about growing a crop, select more than one place to try to grow seeds. Everyone knows that most things need sun to grow, so definitely choose sunny locations.

I have two ground garden areas and a bunch of grow boxes and “raised beds”. It is easier to manage the boxes, and the dirt has been amended over and over. I can move them to shade, or sun, as needed.

This year I also added some new grow bags as well.

Interplanting of Crops

This fall I am doing a lot of interplanting of crops. For one thing, I am not sure which ones will do best and which won’t grow at all.

This small garden in my photo contains snap beans, 2 eggplant, radishes, broccoli, 1 cauliflower, 1 pepper, and a blueberry bush! I know it is not optimal, but I am trying to make the best of a small space.

interplanting beans, eggplant, broccoli, cauliflower
Fall 2023 garden in the backyard

As was true for my summer garden, I am experimenting with fall and winter crops. Whichever vegetables do well, will be planted again next year. I’m keeping lots of notes.

Seeds

Sometimes it is best to grow crops from seeds. Big seeds can be planted directly in the ground, and I’ve had great success with watermelon and pumpkin in spring, and snap beans now.

Buy seeds as close to planting time as you can, in the hopes that they will be freshest. Packets should have a date. I try to use my seeds within a year.

But first I needed to figure out when to plant what in my central Florida location. Even the seeds from Southern Exposure can’t be relied on to give Floridians planting advice. SESE sells seeds to the southeastern US, which means many growers don’t live in a Florida climate. The packets mention “last frost” and freezes.

seed packets
Seed order from The Urban Harvest

There are a few things I’ve purchased that just haven’t grown. I’ve tried them at different times, in different locations, and been unsuccessful. It probably means either bad seeds, or the stuff just doesn’t want to grow in my yard. I’m not going to fight with it, I will move on and grow something else.

The South is Nothing Like the North

Although I would love to grow some of the same plants I grew in New Hampshire, the south is nothing like the north.

Borage is one of the failures. It hates the heat, and I do have a few little seedlings coming up, but none of them look great. I’ve read that borage grows great here in Florida, but I don’t believe it.

Nasturtium has also done nothing. Most of the seeds didn’t even sprout. In this case I am blaming the seeds. But I doubt that the plant will like this Florida climate. Sticking with what works well in my area if a good choice and I won’t buy these again.

Experiment and Take Notes

Do your vegetable gardening research for your particular area, and then plant what is expected to grow well. The UF/IFAS gardening site is a good place to start.

Eventually, I plan to have a list of favorites to grow for every season in my area. The mistakes I make now will only enhance my knowledge of gardening.