Proudly Packaged in Canada

  • A cluster of ripe San Marzano tomatoes with water droplets on their surface.
  • Mckenzie brand tomato seed packet
  • Seed packet with tomato information and planting instructions on a white background
  • Hand planting a small seed into soil outdoors, close-up view of fingers and ground.
  • Close-up of a hand planting a seed into seed starter pods arranged in a tray.
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Tomato, San Marzano Seeds

Lycopersicon esculentum
$2.49
$2.49
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Product Information Chevron Down Chevron Forward

San Marzano is Italian tomato perfection!

110-140 gram (4-5 ounce) plum tomatoes grow on large and vigorous plants. Has excellent tomato flavor and is great to eat fresh, make sauces, or for canning and drying. Deep, well-drained soil is best. 

Keep tomatoes away from all members of the Brassica family: cabbage, cauliflower, etc.

Indeterminate - staking is required.

  • SKU: 143827
  • Common Name: Tomato
  • Botanical Name: Lycopersicon esculentum
Growing Information Chevron Down Chevron Forward
Safe for bees
Safe
for Bees
Good for pollinators
Good For Pollinators
Grow best in
Grows
Best In:
Full Sun
Days to germination
Days to
Germination:
7 - 14 days
Water needs
Water
Needs:
Average 2.5-5 cm (1-2 in.) per week
Days to maturity
Days to
Maturity:
76 days (after transplanting - garden)
Best container size
Best
Container Size:
35 cm+ (14 in..+)
Key Features Chevron Down Chevron Forward
  • Plant Type: Vegetable
  • Plant Lifecycle: Annual (plant every year)
  • Fill Weight (grams): 300 mg
  • Approximate Seed Count: 100-110
  • Characteristics: Attracts bees and pollinators
  • Planting Method: Start Indoors
  • Colour: Red
  • Water Needs: Average 2.5-5 cm (1-2 in.) per week
  • Landscape Use: Edible Garden
  • Growth Habit: Indeterminate - staking is required
  • Companion Planting:

    Plant near asparagus, basil, calendula, dill, garlic, nasturtiums, onions, parsley, thyme. Calendula serves as a deterrent for common garden pests. Asparagus acts as a repellent for nematodes. Basil is effective in repelling whiteflies, mosquitoes, spider mites, and aphids. Additionally, basil attracts bees, which enhances pollination, improves the health of tomatoes, and enhances their flavor. Dill creates an environment that makes it challenging for cutworms to lay their eggs and also supports parasitic wasps that prey on pest caterpillars. Lastly, thyme reduces the egg-laying activity of armyworms.

  • Flavour: Full bodied tomato flavor with a meaty flesh
  • Preparation Ideas: Perfect selection for canning or making paste.
Instructions Chevron Down Chevron Forward
How To Grow

Start tomato seeds indoors 6 to 8 weeks before the last frost in your area. Follow the seed depth and spacing guidelines indicated below. Once all danger of frost has passed, seedlings should be hardened off before planting in their growing location. Seedlings should be transplanted according to the plant and row spacing directions below. Transplant seedlings into the garden once the soil temperature has reached 15°C (60°F). Pick a location sheltered from the wind. Regularly monitor your plants and ensure that the soil remains moist , but not soggy while they establish themselves in their new environment.

  • Planting Depth: 6 mm (1/4in.)
  • Seed Spacing: Sow tomato seeds roughly 2.5 cm (1 in.) apart in rows, keeping rows approximately 90 cm (36 in.) apart.
  • Plant Spacing: 60-90 cm (24-36 in.)
  • Instructions for Nutrient Care: Apply SUPERThrive once per week. Soak in solution of 1/4 tsp per gal for 15 min. or longer depending on size and type.
Suggestions Chevron Down Chevron Forward
Growing Suggestions:
  • San Marzano is an indeterminate tomato meaning staking is required.
  • Tomato plants need a lot of water to produce big, juicy, flavorful tomatoes! Consistent moisture is essential for best results. If tomatoes do not receive consistent moisture, the skins will split or possibly develop blossom end rot. Always water plants at the oil level; this strengthens the root system and avoids foliage disease.
  • Spread mulch around the base of the plant to prevent soil from splashing onto the fruit as this can lead to disease in the tomatoes.
  • As your tomato plants grow, you will notice new small stems sprouting from the point where the main stem connects to the larger branches. These small stems are called in suckers in and they tend to drain a lot of energy from your plant. To help your tomato plants grow faster and produce amazing tomatoes, it is recommended you remove these suckers by pinching them off with your thumb and forefinger. By doing so, your tomato plant will be able to allocate more energy to the growth of the main stem, resulting in better tomato production.
  • If you plant your seedlings deeply, it will encourage the growth of roots from the main stem. Sometimes, tomato plants tend to grow tall and may fall over, even in their initial stages. To avoid this, plant them just deep enough so that the bottom set of leaves is 2.5-5 cm (1-2 in) above the soil surface. Some gardeners prefer planting their tomatoes on their sides, which helps to spread the root system over a larger area, strengthen the main stem, and straighten it toward the sun.

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Overall rating: 4.7027025 / 5 from 37 reviews.

AI Generated Review Summary

San Marzano tomato seeds offer delicious, versatile plum tomatoes ideal for sauces, pastes, and fresh eating. Customers praise their fast growth and high quality, making them a popular choice for gardeners.

Summary topics

  • Flavor and Versatility (29%): Many customers brought up that the San Marzano tomatoes are delicious and perfect for sauces and pastes.
  • Growth Speed (24%): Many customers appreciated that these seeds were fast growing and would buy again in the future, making them a popular choice.

Review topics: [quality, shipping, look, tomatoes, seeds, germination, growing, plants, order, variety, service].

Review highlights

  • "The fruit is an oblong rectangular shape and is very easy to cut beautiful length-wise slices of tomato." — Othmar H.
  • "These are excellent seeds, fast growing and are producing tomatoes, would buy again" — Ron K.
  • "They are Gorgeous - delicious meaty tomatoes!" — Gary&Sherry

Reviews

Best seeds and tomatoes

"Amazing fresh, Juicy and meaty tomatoes! Absolutely love making sauce out of them and also slicing them for topping on my pizza. I usally double sow my seeds just to be on the safer side, and go and behold every one of them takes lol. Great seeds!"

— Kassandra G. (5/5)

Strong Start and Great Variety for Sauce Making

"Started these San Marzano tomato seeds in a small indoor greenhouse and have been very impressed so far. Germination has been strong and the seedlings look healthy with steady early growth. I chose these for making homemade pasta sauce and canning from our backyard garden. The seed quality has been excellent, and I’m excited to see how they perform through the growing season. Would definitely recommend."

— Derrick S. (5/5)

so far so good.

"so far so good."

— Silvia F. (5/5)

Grow well so far under

"Grow well so far under ideal circumstances, have not hardened them to plant out side."

— Mike P. (4/5)

Sprouted quickly and strongly

"Sprouted quickly and strongly"

— Alison A. (5/5)

Up and growing strong.

"Up and growing strong."

— Tracie M. (3/5)

Great tomatoes

"Easy to grow"

— MATTHEW L. (5/5)

Good product and good yields

"Good product and good yields"

— Kyle J. (5/5)

Great Company!

"I ordered my seeds online and received them within a week. So many have now been planted in my 2 mini greenhouses!"

— Anne S. (5/5)

san marzano tomatoes

"Good germanaion."

— Helen D. (1/5)

Q&A

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