CORN-SUPER SWEET MAX F1

How to Grow Super Sweet Max F1

1. Choose a warm, sunny position with at least 6-8 hours of direct sunlight each day because it needs full sun to grow.  Corn is frost tender and should only be planted once the weather has warmed and all risk of frost has passed.
2. Prepare rich, fertile soil as sweet corn is a hungry crop, so prepare the soil with compost, aged manure or a balanced organic fertiliser before sowing.  It grows best in deep, free-draining soil with a pH of around 5.8 – 7.0.
3. Super sweet corn needs warmer soil than ordinary corn. Sow when soil temperature is at least 18°C (65°F), with best germination around 21 – 30°C (70 – 86°F). Cold soil can cause poor germination or rotting seed.
4. Sow seed directly where it is to grow as it does not like root disturbance.  Sow seeds 2 – 3 cm deep (¾ – 1¼ inches) into moist soil.
5. Corn is wind-pollinated, so planting in blocks gives much better cob formation. Instead of one long row, plant several shorter rows together. This helps pollen fall onto the silks and produces fuller cobs.
6. Space plants about 20 – 30 cm apart (8 – 12 inches), with rows 60 – 90 cm apart (24 – 36 inches). Good spacing helps plants grow strongly while still keeping them close enough for pollination.
7. Keep super sweet corn away from other corn varieties.  Super sweet corn can lose eating quality if cross-pollinated with ordinary corn, popcorn or other corn types. Where possible, grow it well away from other corn varieties, or stagger planting times so they do not tassel and flower at the same time.
8. Water regularly and deeply to keep soil consistently moist, especially during tasselling, silking and cob development.  Avoid letting plants dry out at flowering time, as this can lead to patchy or poorly filled cobs.
9. Mulch around the plants once seedlings are growing well, apply mulch around the base of the plants to help hold soil moisture, reduce weeds and keep the root zone cooler during hot weather.
10. Feed during active growth as corn needs plenty of nutrients, especially nitrogen.  Apply a side dressing of compost, aged manure, blood and bone, or a suitable vegetable fertiliser when plants are about 30 – 40 cm tall (12 – 16 inches), then feed again as tassels begin to form.
11. Help pollination if needed when tassels appear at the top of the plants and silks appear on the young cobs, gently shake the plants in the morning to help pollen fall onto the silks. This is especially useful in small garden plantings.
12. Check plants for caterpillars, aphids, earwigs and damage to developing cobs. Strong, well-watered plants are usually more resilient, but young plants may need protection from birds, rodents or cutworms.
13. Harvest at the right stage when the silks have turned brown and dry, and the kernels are plump and release a milky juice when pressed. Super sweet corn is best picked just before eating for maximum sweetness.
14. As an F1 variety, seed saved from Super Sweet Max may germinate, but it will not reliably grow true to type. For consistent results, fresh seed should be purchased each season.

Additional growing tips for Super Sweet Max F1

• Do not rely on saved seed:  As an F1 variety, seed saved from Super Sweet Max may germinate, but it will not reliably grow true to type. For consistent results, fresh seed should be purchased each season.
• Do not soak super sweet corn seed before sowing:  Super sweet corn seed is often more wrinkled and delicate than standard corn seed, and soaking can sometimes make it more likely to rot before germinating.
• Sow a few extra seeds:  F1 Super sweet corn can sometimes have slightly more fussy germination than ordinary corn, especially if conditions are not warm and steady. Extra seed gives you backup plants to thin out later.
• Use raised rows or small mounds in heavy soil:  If your soil holds water, sowing on a slightly raised row helps keep the seed warmer and better drained, reducing the chance of rot.
• Warm the soil before sowing: In cooler areas, cover the soil with black plastic, cardboard, cloches or clear covers for a week or two before planting. This helps bring the soil closer to the ideal 21 – 30°C (70 – 86°F) range.
• Avoid very fresh manure close to planting:  Corn is hungry, but very fresh manure can be too strong and may encourage leafy growth at the expense of good cob development. Aged manure or compost is safer.
• Do not disturb the shallow roots:  Corn has shallow feeder roots near the surface, so avoid deep hoeing around the plants. Hand weed carefully or mulch once plants are established.
• Plant in a square or rectangle, not a narrow strip:  Even a small block of 4 rows by 4 rows will usually pollinate better than a long, thin planting. This helps produce fuller cobs with fewer missing kernels.
• Check every silk matters:  Each silk connects to one potential kernel. If silks dry out, are damaged, or are not pollinated, the cob may have gaps. Keeping plants evenly watered while silks are fresh is especially important.
• Avoid overhead watering during peak pollen shed:  Heavy overhead watering can wash pollen away. Water at soil level where possible, especially while tassels are dropping pollen and silks are fresh.
• Use wind protection, but not total shelter:  Corn needs wind for pollination, but strong winds can flatten plants. A semi-sheltered spot is ideal –  protected from damaging gusts but still open enough for pollen movement.
• Hill soil around the base of plants: Once plants are about 30 – 40 cm tall (12 – 16 inches), gently draw soil up around the base. This can help support the stems and reduce lodging in wind.
• Watch for nitrogen hunger by leaf colour:  Pale green or yellowing lower leaves can indicate the plant is running short of nitrogen. Corn often needs extra feeding before it begins forming cobs.
• Give potassium as cobs begin forming:  Too much nitrogen late in growth can push leaves, but potassium helps support cob fill and kernel quality. A balanced vegetable fertiliser or compost tea can help.
• Protect very young seedlings from birds: Birds can pull up newly germinated corn seedlings while looking for the seed underneath. Netting or temporary covers can help until the plants are established.
• Harvest in the cool of the morning: Super sweet corn holds sweetness better than ordinary corn, but flavour is still best when picked early in the day and eaten or chilled quickly.

Heritage of  Super Sweet Max F1

Super Sweet Max F1 (Zea mays) is a modern hybrid supersweet corn variety rather than an heirloom or traditional open-pollinated corn. Corn itself has ancient origins in Central America, where it was developed from wild teosinte thousands of years ago, but supersweet corn varieties are much more recent breeding developments. Super Sweet Max F1 belongs to the modern supersweet group, bred for tender yellow kernels, high sugar levels, good cob quality and improved sweetness after harvest. As an F1 hybrid, it has been selected for reliable performance and eating quality, but seed saved from the plants will not reliably grow true to type.

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