Another beginner - Struggling with San Marzano Plant

jgottlieb12July 19, 2014

So first off, I am very new to gardening in general. We saw a San Marzano tomato plant at Home Depot and decided to buy it. We transplanted it to a larger pot with Miracle Grow Moisture Control potting soil.

It has a good number of tomatoes growing, but it seems to be one big deep bush of a plant.

I've also recently seen some of the leaves start to turn yellow on me. I water it once every few days, when the soil starts to not feel moist.

Should I be pruning these or doing something vastly different? Is there a tomato growing 101? I'm completely lost as you can imagine and any quick rundown would be great.


Thank you for reporting this comment. Undo

Sounds as if you are doing ok.

You should remove those dead yellow-looking leaves, and any leaves that touch the soil.

I wouldn't prune the suckers, but others might have different ideas.


    Bookmark   July 19, 2014 at 8:19AM
Thank you for reporting this comment. Undo

Are you fertilizing on a regular basis? You need a less concentrated amount of fertilizer, 1/4-1/2 tsp per gallon at least once a week. Also, I would try to clean up the surrounding weeds etc around the container because insects and diseases can affect your plant. But your tomatoes look good. Congrats, San Marranos are not the easiest tomato to grow in my opinion!

    Bookmark   July 19, 2014 at 8:53AM
Thank you for reporting this comment. Undo
digdirt2(6b-7a No.Cent. AR HZ8 Sun-35)

That's an awfully small container for San marzano as it is a huge - 6-7' tall plant when full grown and easily 3-4' wide.


    Bookmark   July 19, 2014 at 10:01AM
Thank you for reporting this comment. Undo

I'm not fertilizing, I understood that the Miracle Grow potting soil I used contains fertilizer.

So cut off any yellowed leaves.

Right now it seems very short and squat... Is that how it supposed to be? Should I be getting a taller (I don't know what they're called) circular frame thing for it to grow up instead of so thick?

How often should I be watering these and am I looking to saturate or just a light water?

As you can tell I'm very new to all this...

I added a closer up picture if that's helpful.

    Bookmark   July 19, 2014 at 3:57PM
Thank you for reporting this comment. Undo

The tall, circular frame you're describing is a "tomato cage." One might help.

Also, you mentioned you weren't fertilizing. I talked to someone who works at a nursery about this topic earlier in the season. He said if you use Miracle Grow potting soil, which does have fertilizer, it's ok not to fertilize for a little while. BUT ... the label on Miracle Grow bag that says it fertilizes plants up to 3 months or 9 months (or whatever time frame) doesn't apply as long to potted plants because of the way they're watered. When watering a potted plant, the fertilizer escapes much quicker. Therefore, it's important to use fertilizer. Liquid plant food/fertilizer mixed with water according to instructions in an old gallon jug should do the trick.

Also, yellow leaves are totally normal, especially at the bottom of the plant. Even an occasional yellow leaf in the middle is ok. Just clip it off. The photo of your plant looks fine.

    Bookmark   July 21, 2014 at 12:16AM
Thank you for reporting this comment. Undo
seysonn(8a WA/HZ 1)

I'm not fertilizing, I understood that the Miracle Grow potting soil I used contains fertilizer.

That is a claim made but the evidence ( your plant as a good example) shows that it may have some nutrients enough for some plants, but not enough for a tomato plant all season long. Furthermore, the mix might maintain P and K for a while but N will not last that long. And yellowing is a sign of N deficiency.

In my opinion MG Moisture Control potting mix is a bad choice for tomatoes. It tends to stay too soggy and thus allowing very little air to the root system.

    Bookmark   July 21, 2014 at 3:59AM
Sign Up to comment
More Discussions
How Is The Weather ..1- 2015
Spring has arrived early here. The temperatures are...
Seysonn_ 7b-WA/HZ1
Rabbit Manure for Tomatoes
Hi- There's a guy locally that is selling rabbit manure...
Pinetree Garden Seed Company for Cuostralee
Is Pinetree Garden Seed a reliable source for tomato...
Critique Varieties please for 2015
My garden each year seems to expand here in N. Indiana...
Baby tomatoes with yellowing leaves
My tomatoes plants are about 5 weeks old. They have...
Sponsored Products
American Drew Antigua Round Swivel Bar Stools - Set of 2 - ADL4355
$780.00 | Hayneedle
Elegance Botanical Arrangement
$849.00 | FRONTGATE
Distratto Pendant by Trend Lighting
$120.00 | Lumens
Slamp | Cactus XL Floor Lamp
Correll Round Table Cart - T456
$371.56 | Hayneedle
Knightsbridge Ceiling Fan by Ellington Fans
$340.20 | Lumens
Safavieh Indoor/Outdoor Area Rug: Safavieh Rugs Organica Red/Multi 6 ft. x 9
Home Depot
Brown Cotton Border Panama Sisal Rug, Tan
Cost Plus World Market
© 2015 Houzz Inc. Houzz® The new way to design your home™