Name: Organic 'Rio Grande' Tomato Seeds
Brand: Gaia
Price: 4.99 CAD
Availability: InStock

Sale Sold out

Open-pollinated seeds. Solanaceae.

Gaia

Solanum lycopersicum.

From seed to harvest

HeirloomOpen-pollinated

Common nameRio Grande tomato.

FamilySolanaceae.

GenusSolanum

Specieslycopersicum.

CultivarRio Grande

TypeOpen-pollinated seeds.

Botanical nameSolanum lycopersicum.

Reproducible seedsYes

Heirloom varietytrue

Quantity per packet25 seeds

Organic 'Rio Grande' Tomato Seeds (Solanum lycopersicum). It is a paste tomato producing elongated, firm, meaty red fruit with relatively low water content suited to sauces. Its determinate growth habit concentrates much of the crop into a shorter period than indeterminate tomatoes. Gaia presents this open-pollinated variety as an heirloom. The packet contains 25 seeds certified organic by Ecocert Canada according to Gaia. Observe foliage, soil and growth regularly so care can be adjusted to each site. For practical seed starting, growing from seed succeeds best when the verified product depth, moisture and temperature guidance is followed.

Start seeds indoors six to eight weeks before planting out. Sow 0.3 to 0.6 cm deep in clean, lightly moistened seed-starting mix. Maintain 23 to 29°C until emergence, then place seedlings in bright light. Transplant into individual pots after the first true leaves develop. In Canada, time outdoor planting from the local last frost and soil warmth rather than a fixed date. Harden seedlings off gradually for seven to ten days. Choose compost-enriched, well-drained soil receiving at least six to eight hours of sun. Use the product details as a clear guide on how to start seeds while keeping the growing medium evenly moist, never saturated. For indoor seed starting, count back from local conditions and frost dates to decide when to start indoor seeds. Starting tomato seeds with steady warmth supports even emergence; move each tomato seedling into bright light promptly.

Pick fruit once its mature colour has developed and it yields slightly to gentle pressure. Handle carefully without pulling on the branch. Before the first frost, bring in fruit that has begun to colour and let it finish ripening indoors. Cool temperatures and limited sun may delay harvest beyond the stated maturity period. Rio Grande combines a concentrated determinate crop with fruit that is easy to cook in quantity. Keep the full cultivar name on the plant label so it is not confused with Gaia varieties that differ in colour, growth habit or earliness.

Light and life cycle

In the garden

Exposure: Full sun.
Life cycle: Annual.
Hardiness: Cultivée comme annuelle après le dernier gel.

Sowing and germination

Sowing guide

Sowing & germination

Sowing depth

0.3 to 0.6 cm (0.12 to 0.24 in).

Spacing / density

45 to 60 cm (17.7 to 23.6 in) between plants; 120 to 180 cm (47.2 to 70.9 in.) between rows.

Germination temperature

23 to 29 °C (73.4 to 84.2 °F).

Germination time

5 to 10 days at 23 to 29 °C.

Propagation

By seed; isolate plants if saving seed to preserve varietal purity.

Growing method

Transplant seedlings into individual pots once the first true leaves have developed. In Canada, time outdoor planting according to the local last-frost date, soil warmth and reliably mild nights. Harden seedlings off gradually, install supports at planting and allow enough space for harvesting and good air circulation. Water slowly at soil level to moisten the root zone, then let the surface begin to dry before watering again. Consistent moisture during fruit development helps reduce cracking and other physiological disorders. For indoor tomato seed starting, use a clean mix, steady warmth and bright light after emergence. This seed starting sequence supports reliable growing from seed while preserving the product-specific depth and temperature facts.

Soil and care

Soil & care

Soil pH

6.0 to 6.8.

Moisture

Evenly moist soil with no standing water.

Minimum temperature

Frost-tender; plant after the last frost once nights remain mild.

Care level

Moderate.

Watering

Mulch applied after the soil warms reduces evaporation and soil splash. Check container moisture more often and empty the saucer after watering.

Soil type

Choose fertile, loose, well-drained soil that holds even moisture without remaining saturated. Incorporate finished compost before planting and avoid cold or compacted ground. In containers, use vegetable potting mix rather than garden soil alone. Effective drainage keeps air around the roots and reduces problems caused by standing water.

Fertilization

Incorporate finished compost at planting. Supplement with a vegetable fertilizer according to its label and the soil’s fertility, especially in containers where frequent watering leaches nutrients. Avoid excess nitrogen, which favours leaves over fruit. Water a dry root ball before fertilizing and adjust applications to actual growth.

Seasonal care

Start seedlings warm in spring and pot them on before roots become crowded. Harden off and plant after frost in warmed soil. Install support and water deeply. In early summer, mulch, tie stems and inspect leaf undersides. Remove damaged leaves without stripping the plant. Maintain consistent moisture during fruiting, check ties and split fruit after heavy rain, harvest before frost and remove diseased residue. Clean supports and rotate crops the following year.

Growing in containers

Container growing

Recommended pot size

40 to 60 L, one plant per container.

Use a stable container with drainage holes and 40 to 60 L of potting mix for one plant. Place it in full sun where air circulates, anchor a cage or stake at planting and tie stems as they grow. Check moisture daily in hot weather, water until excess drains and never leave the pot standing in a full saucer. Fertilize moderately according to the product label and harvest regularly.

Growth and harvest

Size, flowering & harvest

Mature height

120 to 180 cm (47.2 to 70.9 in).

Width / spread

60 to 90 cm (23.6 to 35.4 in).

Flower color

Yellow.

Foliage color

Green.

Foliage type

Herbaceous annual.

Growth rate

Varies with warmth, light and growth stage.

Growth habit

Determinate; support with a cage.

Edible parts

Ripe fruit only; leaves and stems are not edible.

Bloom period

Small yellow flowers appear in clusters during the warm season. Tomatoes are mainly self-pollinating; flower vibration promotes pollen release. In the garden, bumblebees can participate in this process. Under shelter, ensure good ventilation and avoid excessive temperatures that can reduce the fruit set. Flowering and harvesting also depend on the light and condition of the plant.

Days to maturity

75 to 85 days.

Garden companions

Garden associations

Companion plants & uses

Companion plants

Basil, parsley and low flowers such as marigolds can grow nearby when every plant receives enough light and space. Flowers can broaden the range of resources available to beneficial insects, but no companion planting guarantees pest control. Keep the base of the tomato accessible for watering, inspection and tying stems.

Plants to avoid

Avoid overcrowding and do not grow Solanaceae in the same location year after year. Potatoes and tomatoes can share certain diseases, so crop rotation, clean garden practices and good air circulation are more important than a universal list of enemy plants.

Garden use

Chop 800 g of ripe tomatoes and sauté them with chopped onion and a drizzle of oil. Simmer for about 25 to 35 minutes, then blend to the preferred texture and season with basil, salt and pepper. Refrigerate promptly or freeze in portions. For shelf-stable jars, follow a validated tomato-canning recipe.

Wildlife and pets

Wildlife & precautions

Reported toxicity

Yes

Supporting wildlife

Flowers can be visited by bumblebees and other insects. The tomato pollinates widely itself and is not a major source of nectar. Various flowers around the vegetable garden extend the supply of resources for pollinators throughout the summer.

Frequently asked questions

How many 'Rio Grande' Tomato seeds are in the packet?

The Gaia packet contains 25 seeds. Store unused Rio Grande tomato seed in its labelled packet in a cool, dry, dark place.

How long do 'Rio Grande' Tomato seeds take to germinate?

Emergence generally takes 5 to 10 days at 23 to 29 °C (73.4 to 84.2 °F). Keep the growing medium evenly moist but never waterlogged, and provide bright light as soon as seedlings emerge. The tomato seed germination time for 'Rio Grande' Tomato should be judged against the verified range above rather than a fixed national calendar. When growing from seed, keep conditions stable for the full stated germination window before disturbing the mix.