We can all agree that home grown tomatoes are what make life worth living, right. (Oh be quiet- you like them in salsa and stuff, though, right? okay, then.) So, we can probably all agree that we want those tomatoes as early as possible, right?
Around here (zone 5, Northern front range of Colorado) the traditional date for safely planting out things that won’t survive frost is Mother’s day- mid May. There is no guarantee it won’t freeze after that date, but that is the average annual last frost date. This year we had a snowy April, and an actual cancel-school- snow day on May first.
That meant that the ground was cold- it was very wet, which is a good thing, but the soil was cold. I made the decision to delay tomato-planting until it warmed up a bit.
Tomatoes need warm air temperature as well as warm soil temperature- it isn’t just a matter of “not freezing” they actually need to be warm. (Interestingly, tomatoes are kind of the Goldilocks of plants, when it gets too hot, over 90, they stop blooming)
I checked the soil temp with my trusty meat thermometer, and it was 43 degrees. I had some walls of water in the garage. For those of you who don’t know, a Wall of Water is a plastic cylinder made of connected tubes which can be filled with water. It creates a mini greenhouse, and the water absorbs heat during the day and releases it at night. They are supposed to be self supporting. I set them up, (and then reset them up- they kept falling over- I don’t know if the cat kept messing with them or what the deal is, but that is why I don’t ordinarily use them- any one have any tips?)
Look how slouchy that one on the right is- if that falls over on the chocolate cherry plant I am going to be so ticked off.
Anyway, I set them up, then took the soil temperature again. It was 63 degrees after just a couple of days.
Now, variety choices. In the past I have gotten “Early Girl” because the fruits are, you know, early. 60 days to maturity, which means mid July, roughly. One year I was swayed by some garden porn, and bought Radiator Charlie’s Mortgage Lifter, which has a great name, and an heirloom provenence, and is supposed to be heart-meltingly delicious, which didn’t ripen until late September, so I didn’t get to eat any. Mid- September is our average last frost date, so we have about 4 months to get as many tomatoes as we can.
This year I went to the garden center, and mixed in with all the Early Girls was a variety I hadn’t heard of before- 4th of July. I checked the label- 55 days. Which means first harvest on the…let me do the math..umm, 30 days hath September…carry the 1- the 4th of July.
The other variety I picked today was Chocolate Cherry. I have grown this before, and it is so delicious. It ripens to a dark, deep red, very sweet. It is a bit slower to ripen, but very prolific.
So, I put them in the ground, carefully lifting the waterfilled tubes away from the planting spots, digging in some compost, plugging the tomato plants in deeply, then carefully replacing the waterfilled tubes back over the plants. I acknowledge that it might have been easier to dump out the water and refill, but I just couldn’t see doing it. It seems wasteful.
That was a couple of weeks ago, and the 4th of July has blossoms on it. I haven’t seen any pollinators go inside- which doesn’t mean there aren’t any, but I have been busy. Does anyone have tips about that? The walls of water seem to be kind of a pain in the neck, but I am hoping they are worth it.
Strawberry Fields for Breakfast 