Growing Tomato

Lycopersicon esculentum : Solanaceae / the nightshade family

Jan F M A M J J A S O N Dec
    S                  
      T T T            
      P P              

(Best months for growing Tomato in USA - Zone 5a regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 61°F and 95°F. (Show °C/cm)
  • Space plants: 16 - 24 inches apart
  • Harvest in 8-17 weeks.
  • Compatible with (can grow beside): Asparagus, Chervil,Carrot, Celery, Chives, Parsley, Marigold, Basil
  • Avoid growing close to: Rosemary, Potatoes, Fennel, Cucumber

Your comments and tips

02 Jun 22, KATE (Australia - tropical climate)
Tomato seedlings get up to about 2 inches high, then just fall over and die. Spinach did the same. In tropical Darwin. Tried growing seedlings in trays first, plant them out only to loose them about a week later. Trying to Grow in a raised bed as no success into garden soil. Raised bed built mostly of potting mixtures with bags of compost and sand added. Lots of Dynamic lifter, turned over and left fallow for the wet season. Seedlings did the same death rate in the raised bed. What am I missing. Been here for 3 years and first season crops were really abundant. Now everything dies except for my Lime, Lemon and Guava Trees. Is it just to hot for Tomatoes and spinach now?
06 Jun 22, Anonymous (Australia - tropical climate)
Tropical climate - plant tomato seeds May, transplant June and July. Your soil mix is very porous, it would dry out very quickly especially in hot Darwin. And with watering it would leach out the fertilisers. With your soil mix you probably needed to water 3-4 times a day. The wet season probably leached all the Dynamic Lifter out of the soil. Ok- potting mix has a lot of wood in it. Material like this grabs the nitrogen before the plant does. Compost would do the same if it is not completely broken down. Here is what I do, sub tropical, in the fallow season Nov to April, I dig/turn my soil over adding grass clippings, shrub trimming etc mulched with the mower. With normal rain it will keep this moist and help break down the grass etc. You can add a little D Lifter. By late April /early May after the wet season you should have some good friable soil (depends what the original soil was like). You could add some more compost if you like and maybe manures, about 3-4 (?)
31 May 22, Iris Sullivan (USA - Zone 11b climate)
where to buy tomato seeds for tomato plants that can withstand 11b climate.
19 Jun 22, susan pawley (USA - Zone 10b climate)
its really hot and humid in south east florida. too far inland for any sea breezes too. I had great luck with a variety bred by UofF for growing here called Floridade. Another one also bred for south fl climate is Talladega and Amelia. I havent grown them for a few years I think I got the seeds on line at rareseeds.com but not sure. Only getting back into gardening last winter as Ive been on hiatus due to illness.
29 Apr 22, (USA - Zone 10b climate)
Any tips for growing tomatoes during the summer in zone 10b USA?
29 Jan 24, Janine (USA - Zone 10b climate)
Move them indoors under a grow light (or in a sunny window) from July through September so they won't burn. Some cultivars are more heat resistant and will survive the zone 10 summer outdoors.
09 May 22, LouElla Chevalier (USA - Zone 9a climate)
Use shade covers. I set 4x4's . 8' high. 40% white shade cloth. Prune bottom leaves to insure plenty of air flow. You can get a higher shade cloth, for your zone, I would get a 50% white shade cloth. I only use mine for late May, June, July and August. I take them down when I see the temps go below 95 deg. I also mulch to retain water. I do not water the leaves, only at soild level and in early mornings. During the hottest months, I water daily.
05 Apr 22, chris (USA - Zone 8b climate)
I am in Zone 8b and was expecting seedlings from a relative so i didn't start any myself. Now, that plan fell through. It's April 5 and I am buying seeds today. Should I start indoors or directly in the soil today? I would just buy new seedlings but I am going all organic again and organic seedlings are too expensive! thanks
10 Apr 22, Celeste Archer (Canada - Zone 7b Mild Temperate climate)
You can look up the germination (seed hatching) temperature for various vegetables online. Compare this temperature to your soil temperature (even your air temperature to get an idea) -- the germination temperature needs to be met and sustained for the seeds to germinate (in addition to water, soil and presence of light for some shallow planted seeds). Most likely you will still benefit from starting indoors -- it all depends on temperatures AND which veggies you are planting - some veggies seeds have fairly low germination temps - beans, chard, mustard etc. Other veggies have very high germination temps: tomatoes, peppers etc. Remember that the germination temp needs to not only be met, it needs to be sustained. Since you can control your inside temperature - I would start my seeds indoors -- and potentially add a heating pad under the seedling tray. If you plant outdoors you can use a tarp to help warm the soil; I prefer clear elevated about 6" above the ground (like a green house) to help warm the soil when the sun hits it
08 Apr 22, Anonymous (USA - Zone 4a climate)
Check the planting guide here for the zone you live in
Showing 41 - 50 of 799 comments

Jaci, I think that is a good way of getting your tomatoes to set early fruit. But I don't think there is any need to treat all you tomatoes quite so harshly. When it gets hot in the summer they tend to get punishment enough. I reckon you should treat some of your tomatoes more kindly so that they can develop strong root systems to get them to bare well through the summer. That doesn't mean you have to treat them with kid gloves but it could help extend your season.

- Grahame

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