Inca Marigold Yellow F1 Hybrid – 15 seeds

Description

Inca Marigold Yellow F1 Hybrid – seeds

 

Price: 120 Taka per packet

Quantity: 15 seeds

 

Germination Rate (Approx.): 80%

Physical Purity (Min): 98%

Genetic Purity (Min): 98%

 

Germination Temperature

• Ideal germination temperature: 20–24°C
• Acceptable range: 18–27°C

The most consistent and uniform germination generally occurs when the growing medium remains around 20–24°C.

Temperatures above approximately 28–30°C may result in less uniform germination, particularly when combined with excessive moisture.

Recommendation for Bangladesh

For the best results, maintain the seed-growing medium at approximately: 20–25°C

 

Germination Time

• Under ideal conditions: 4–7 days
• Under normal home or rooftop growing conditions: 7–10 days
• Poor-quality, old, improperly stored seed, unsuitable temperatures, or excessive moisture can increase germination time to: 10–14 days

Plant Height, Plant Spread and Seed Sowing Depth

Characteristic	Recommended Range
Plant height	24–36 inches
Possible cultivar range	Approximately 12–36 inches
Plant spread	18–24 inches
Seed sowing depth	¼–½ inch
Recommended sowing depth	Approximately ¼ inch / 0.6 cm

For home germination, sowing the seed approximately ¼ inch deep is recommended. Avoid sowing too deeply, as this may delay or reduce germination.

Plant Spacing

• Recommended spacing: 18–24 inches between plants
• For intensive planting: 18 inches
• For larger, vigorous plants with better airflow: 20–24 inches

Row Spacing

Recommended row spacing: 24–30 inches

A practical layout is:

• Plant-to-plant: 18–24 inches
• Row-to-row: 24–30 inches

For large Inca plants grown in fertile soil, wider spacing is preferable.

Trellis or Physical Support Requirement

Trellis is not required.

However, a simple bamboo stake or plant support may be beneficial if:

• The plant grows taller than approximately 30 inches.
• The flower heads become very large and heavy.
• The plant is exposed to strong rooftop winds.
• Excess nitrogen produces soft, weak stems.

A single stake is generally sufficient.

Seed-to-Bloom Time

• Expected time: 60–75 days from sowing
• Under excellent commercial growing conditions, flowering may occur sooner, while cooler temperatures or environmental stress can delay flowering.
• For Bangladesh rooftop gardening, a realistic expectation is: Approximately 2–2.5 months from seed to the first flowers

How Long Do the Flowers Last?

• An individual flower may remain attractive for approximately: 10–20 days
• The total flowering season of a healthy plant can last approximately: 2–4 months
• Regular removal of faded flowers, known as deadheading, can help extend the flowering period.

Flower Shape and Size

Flower shape

Inca Marigold flowers are generally:

• Fully double
• Dense
• Rounded
• Globular
• Pompon-like
• Composed of many tightly packed petals

Flower size

• Typically: 3–5 inches in diameter
• Under excellent growing conditions, some flowers may reach approximately 4–5 inches across.

Life Span

Inca Marigold is an:

Annual plant

A typical practical life cycle is approximately: 6–10 months

The exact lifespan depends on climate, pests, disease, and growing conditions. In tropical conditions, plants may survive longer, but flowering and plant quality eventually decline.

Recommended Pot, Container and Bed Size

• Minimum container size: 12 inches wide × 12 inches deep
• Better container size: 14 inches wide × 14 inches deep
• Recommended size for maximum performance: 16–18 inches in diameter × 14–18 inches deep

For large Inca varieties:

• One plant per container is strongly recommended.
• Raised bed recommended soil depth: 12–15 inches minimum

Ideal Soil Type and pH

The ideal growing medium should be:

• Well-draining
• Moderately fertile
• Rich in organic matter
• Moist but not waterlogged
• Airy and porous
• Capable of retaining sufficient moisture
• Slightly acidic to neutral
• Ideal soil pH 6.0–7.0
• Acceptable range 5.8–7.5

Recommended Potting Mix for Bangladesh Rooftop Gardening

Using only the ingredients from your provided list, the following is a balanced potting mix suitable for growing Inca Marigold in rooftop containers.

Ingredient	Percentage
Loamy Soil	30%
Coconut Coir Dust	20%
Vermicompost	15%
Cow Dung Compost	10%
Trichocompost	5%
Brown River Sand	8%
Perlite	5%
Cinder	3%
Wood Charcoal	2%
Neem Cake Powder	1%
Bone Meal	0.7%
Horn Meal	0.2%
Mustard Cake Powder	0.5%
Oyster Shell Powder	0.3%
Epsom Salt	0.05%
Turmeric Powder	0.05%
Total	100%

 

Important notes: Turmeric powder should be used in an extremely small amount, if at all. It is not a primary fertilizer.

The following materials are generally better used as coarse structural or drainage materials rather than as major components of the root-zone mix:

• Medium-sized coconut husk
• Wood bark
• Jhama
• Large stones

Avoid filling the bottom of the container with a thick layer of stones, as this reduces the available root volume.

Daily Sunlight Requirement and Germination Light Requirement

Mature plants

• Minimum: 6 hours of direct sunlight per day
• Ideal: 6–8 or more hours of direct sunlight
• For Bangladesh rooftop gardening, strong morning and early afternoon sunlight is particularly beneficial.

Germination stage

Marigold seeds do not require strong direct light to germinate.

Keep the growing medium:

• Warm
• Evenly moist
• Not waterlogged

After germination, seedlings should quickly receive bright light and gradually be exposed to direct morning sunlight.

Water Requirement and Watering Interval

Water requirements vary significantly depending on:

• Container size
• Plant size
• Temperature
• Rainfall
• Wind
• Humidity
• Soil composition

Practical watering guide

Plant Stage	Approximate Water	Watering Interval
Seedling	100–250 ml	When surface begins to dry
4–8 inch plant	300–600 ml	Every 1–3 days
8–18 inch plant	0.5–1 litre	Every 1–3 days
Mature flowering plant	1–2.5 litres	Approximately every 1–3 days

 

Best rule

• Water thoroughly when the upper: 1–1.5 inches of growing medium becomes dry
• During heavy monsoon weather, watering may not be required for several days.
• During winter, watering may be required only every: 2–5 days
• Avoid constantly wet soil, as excessive moisture can cause root and stem diseases.

Suitable Companion Plants

Good companion plants include:

• Basil
• Zinnia
• Cosmos
• Calendula
• Petunia
• Salvia
• Snapdragon
• Chili
• Capsicum
• Tomato
• Eggplant
• Cabbage
• Broccoli

Some Tagetes species and cultivars have also been used in cropping systems for managing certain plant-parasitic nematodes.

However, it is important not to assume that marigolds repel every insect or protect all nearby crops from pests.

Fragrance

Yes, Inca Marigold produces a characteristic fragrance. However, the scent is generally not sweet like a rose or jasmine.

It is better described as:

• Herbal
• Green
• Earthy
• Slightly pungent
• Characteristically “marigold-like”

Fragrance strength: Approximately 4/10

The foliage often has a stronger smell than the flowers.

 

Major Pests and Control Methods

Spider Mites

Chemical active ingredients

• Abamectin
• Spiromesifen
• Bifenazate

Organic alternatives

• Neem oil
• Insecticidal soap
• Strong water spray on the undersides of leaves

Thrips

Chemical options

• Spinosad
• Abamectin

Organic alternatives

• Neem oil
• Insecticidal soap
• Blue sticky traps

Aphids

Chemical options

• Acetamiprid
• Imidacloprid

Organic alternatives

• Neem oil
• Potassium soap
• Water spray

Whiteflies

Chemical options

• Acetamiprid
• Thiamethoxam
• Buprofezin

Organic alternatives

• Yellow sticky traps
• Neem oil

Caterpillars

Chemical options

• Spinosad
• Emamectin benzoate

Organic alternatives

• Manual removal
• Bacillus thuringiensis (Bt), where appropriate

Important

Always follow the product label, local registration requirements, safety instructions, protective equipment requirements, and pre-harvest intervals.

19. Major Diseases and Management

Powdery Mildew

Chemical options

• Sulfur
• Potassium bicarbonate
• Myclobutanil

Organic or lower-risk methods

• Sulfur-based products
• Potassium bicarbonate
• Remove heavily infected leaves
• Improve airflow

Botrytis Blight

Chemical options

• Cyprodinil + Fludioxonil
• Other locally registered Botrytis fungicides

Cultural control

• Remove infected flowers
• Reduce prolonged leaf wetness
• Improve ventilation
• Avoid overcrowding

Leaf Spot Diseases

Chemical options

• Copper-based fungicides
• Mancozeb

Organic approach

• Copper-based products where suitable
• Remove infected leaves
• Avoid unnecessary overhead watering

Root and Stem Rot

Prevention and management

• Avoid overwatering.
• Use well-draining soil.
• Ensure sufficient drainage holes.
• Remove severely infected plants.
• Do not reuse heavily contaminated growing media.

20. Essential Nutrients

Inca Marigold requires balanced nutrition.

Primary nutrients

Nutrient	Importance
Nitrogen (N)	Moderate
Phosphorus (P)	Moderate to high
Potassium (K)	Moderate to high

A practical fertilizer analysis during vegetative growth may be approximately:

10–20% N

10–20% P₂O₅

15–25% K₂O

These percentages refer to fertilizer analysis, not the exact nutrient content required inside the plant.

During flowering, excessive nitrogen should be avoided because it may encourage excessive leafy growth at the expense of flowers.

Secondary nutrients

• Calcium
• Magnesium
• Sulfur

Micronutrients

• Iron
• Zinc
• Boron
• Manganese
• Copper
• Molybdenum

Organic sources of nutrients

Organic Material	Main Nutritional Contribution
Vermicompost	N, P, K, organic matter, beneficial microorganisms
Cow Dung Compost	N, P, K and organic matter
Trichocompost	Organic matter and beneficial fungi
Bone Meal	Mainly phosphorus and calcium
Horn Meal	Slow-release nitrogen
Neem Cake	Nitrogen and other nutrients
Mustard Cake	Nitrogen-rich organic nutrition
Oyster Shell Powder	Calcium
Epsom Salt	Magnesium and sulfur

21. Organic Fertilizer Application per Plant

The following schedule is designed for:

One plant in a 16–18 inch container

During pot preparation

• Vermicompost: 400–600 g
• Cow dung compost: 300–400 g
• Trichocompost: 150–250 g
• Neem cake powder: 20–30 g
• Bone meal: 15–25 g
• Horn meal: 5–10 g
• Mustard cake powder: 10–20 g
• Oyster shell powder: 5–10 g

Approximately 30 days after transplanting

Apply around:

• Vermicompost: 100–150 g
• Neem cake: 5–10 g

Mix lightly into the upper soil layer and water afterward.

At flower bud formation

Apply:

• Vermicompost: 100 g
• Bone meal: 5–10 g

During flowering

Every:

20–30 days

Apply:

75–100 g vermicompost per plant

Avoid excessive feeding.

22. Chemical Fertilizer Requirement

Early vegetative growth

Use a balanced fertilizer such as:

• 19-19-19
• 20-20-20

Recommended concentration

1–1.5 g per litre of water

Apply approximately:

500 ml–1 litre of prepared solution per mature container

depending on soil moisture and container size.

Interval

Every:

14–21 days

Bud formation and flowering

Use a relatively higher potassium or flowering fertilizer.

Possible examples include:

• 10-20-20
• 13-40-13
• Other suitable high-potassium flowering fertilizers

Application concentration

1–1.5 g per litre of water

Application interval

Approximately:

Every 10–14 days

Avoid excessive fertilizer concentration because it can cause root burn and salt accumulation.

23. Health Benefits and Medicinal Uses

Tagetes erecta contains biologically active compounds including:

• Carotenoids
• Lutein
• Flavonoids
• Phenolic compounds
• Essential oils

The most commercially important compound is:

Lutein

Marigold flowers are an important commercial source of lutein and other carotenoid pigments.

Traditional medicinal systems have used Tagetes erecta for various purposes. However, traditional uses should not be considered proven medical treatments.

24. Is Inca Marigold Edible?

The petals can be edible when properly identified and grown specifically for food use.

Possible uses include:

• Salad decoration
• Cake decoration
• Rice garnish
• Soup garnish
• Natural food colouring
• Herbal and culinary flower preparations

Important safety note

Only consume flowers that are:

• Correctly identified
• Free from pesticides not approved for edible crops
• Free from chemical residues
• Grown under food-safe conditions

Do not consume ornamental nursery flowers simply because the species may be edible.

25. Special Characteristics

1. Large, dense, fully double flowers
2. Bright yellow, orange, gold and related colours
3. Long flowering potential
4. Suitable for containers and flower beds
5. Strongly aromatic foliage
6. Potential use in certain nematode-management cropping systems
7. Commercial source of lutein and natural pigments

26. How to Encourage More Flowers

For maximum flowering:

1. Provide 6–8 hours of direct sunlight daily.
2. Avoid excessive nitrogen fertilizer.
3. Maintain good drainage.
4. Do not overwater.
5. Apply balanced nutrition during vegetative growth.
6. Increase emphasis on phosphorus and potassium during bud formation and flowering.
7. Remove faded flowers regularly.
8. Maintain adequate spacing and airflow.
9. Inspect plants regularly for pests.
10. Protect the root zone from prolonged heavy rainfall.
11. Support tall plants if strong winds are common.

Deadheading is particularly important.

Removing old flowers encourages the plant to continue producing new flower buds.

27. Different Uses of Inca Marigold

• Ornamental gardening
• Rooftop gardening
• Container gardening
• Flower beds and borders
• Landscaping
• Cut flower production
• Garlands
• Festival decoration
• Religious and cultural decoration
• Natural pigment extraction
• Lutein production
• Companion planting
• Floral arrangements

28. Best Month for Natural Seed Germination in Bangladesh

Based on the temperature requirements of Inca Marigold and Bangladesh’s general seasonal conditions, the most suitable natural sowing period is:

Mid-October to Mid-November

The broader suitable period is approximately:

October–November

A secondary possible growing window is:

January–February

provided that seedling temperatures remain suitable.

Recommended period for Bangladesh rooftop gardening:

15 October–30 November

This period generally provides more favourable temperatures and avoids the extreme rainfall and disease pressure of the monsoon.

29. Most Effective Propagation Method

Seed propagation

This is the most practical and commercially important propagation method because it is:

• Economical
• Fast
• Easy
• Suitable for large-scale production
• Capable of producing uniform plants when quality F1 seed is used

Important

If the Inca variety is an F1 hybrid, seeds collected from its flowers may not produce plants identical to the parent plant.

30. Native Climate and Region

The species Tagetes erecta is native to:

Mexico and Central America

It naturally performs well in:

• Warm climates
• Tropical regions
• Subtropical regions
• Sunny environments

Despite the common name “African Marigold,” the plant is not native to Africa.

31. Seed Germination Difficulty

Rating: 2/10

This means it is generally:

Very easy to germinate

The main causes of germination failure include:

• Old seeds
• Excessive watering
• Poor drainage
• Extremely high temperatures
• Deep sowing
• Fungal damping-off

32. Overall Growing Difficulty

Rating: 3/10

Inca Marigold is generally:

Easy to grow and beginner-friendly

The main challenges in Bangladesh are:

• Heavy monsoon rainfall
• High humidity
• Root diseases
• Leaf diseases
• Pest outbreaks
• Strong rooftop winds

33. Top Six Commercial Uses

1. Fresh cut flower production
2. Garland and decorative flower production
3. Religious and festival flower markets
4. Lutein extraction
5. Natural pigment and colourant production
6. Ornamental nursery and landscaping production

34. Average Number of Seeds per Gram

Commercial seed sources show variation depending on:

• Seed cleaning
• Seed size
• Seed lot
• Whether the seed has been processed or de-tailed

A practical range is:

Approximately 250–300 seeds per gram

A reasonable average estimate is:

Approximately 260 seeds per gram

 

Three Main Specialties

• Large Decorative Flowers: Inca Marigold produces large, dense, rounded flowers with strong visual appeal.
• Excellent Commercial Appearance: Its large blooms and uniform growth make it attractive for ornamental and commercial flower production.
• Good Performance in Warm, Sunny Conditions: With proper drainage and balanced nutrition, it can perform well in warm climates and rooftop gardens.

 

Beautiful Quotes

• “An Inca Marigold does not wait for a perfect garden—it turns every sunny corner into a celebration of gold.”
• “Where an Inca Marigold blooms, sunlight seems to have chosen a permanent home.”

Three Lesser-Known Facts

• It is not actually African in origin. Although commonly called African Marigold, Tagetes erecta is native to Mexico and Central America.
• It is an important source of lutein. The flower is commercially cultivated for carotenoid pigments, especially lutein.
• Some marigolds are used in nematode-management systems. Certain Tagetes species and cultivars can be used in specific cropping systems to help manage some plant-parasitic nematodes.

 

Native Region of the Plant

Native region:

Mexico and Central America

39. Origin Story

Tagetes erecta originated in the ancient regions of:

• Mexico
• Central America

It was associated with local cultural, ornamental, and ceremonial traditions before spreading to other parts of the world.

Through international trade and cultivation, the species eventually became popular throughout Europe, Asia, Africa, and other regions.

The common name African Marigold reflects historical naming and trade history rather than its true botanical origin.

About the Inca Series

The Inca name refers to a modern cultivated breeding series of Tagetes erecta. It should not be confused with the original discovery or botanical naming of the species.

40. Scientific Name and Family

Scientific name:

Tagetes erecta L.

Plant family:

Asteraceae

Common names:

• African Marigold
• Aztec Marigold
• Mexican Marigold
• Inca Marigold

Summary

Factor	Recommended Practice
Container	16–18 inch diameter, 14–18 inch deep
Plants per container	1
Germination temperature	20–24°C
Germination time	4–7 days under ideal conditions
Sowing depth	Approximately ¼ inch
Sunlight	6–8 hours daily
Plant spacing	18–24 inches
First flowering	Approximately 60–75 days
Flower size	Approximately 3–5 inches
Soil pH	6.0–7.0
Watering	When the top 1–1.5 inches of medium becomes dry
Best sowing period in Bangladesh	Mid-October to mid-November
Germination difficulty	2/10
Growing difficulty	3/10

 

The three most important factors for success are:

• Excellent drainage — never allow the root zone to remain constantly wet.
• Strong direct sunlight — ideally 6–8 hours daily.
• Balanced feeding — avoid excessive nitrogen and provide appropriate nutrition during bud formation and flowering.

For Bangladesh rooftop cultivation, mid-October to mid-November sowing, a 16–18 inch container, a well-draining organic-rich growing medium, and one plant per pot would be my preferred production system for obtaining large, healthy Inca Marigold flowers.

 

Reference Websites and Further Reading

The following are the main sources and reference pages used or consulted for the original research and the consolidated growing recommendations:

• PlantUse / PROTA — Tagetes erecta
• Royal Horticultural Society — Tagetes erecta
• Urban Farmer — Yellow Inca II Marigold Seeds
• Urban Farmer — Orange Inca II Marigold Seeds
• Moles Seeds — Inca II Series
• North Carolina Extension — Tagetes
• Medicinal Plants of Bangladesh — Tagetes erecta

 

Tutorial Link:

 

CLICK HERE TO LEARN MORE ABOUT GROWING TIPS

 

Recommended Items for Seedling Preparation:

-Seedling Tray Bed

https://mygardenbd.com/product/ready-mix-soil-%e0%a6%b0%e0%a7%87%e0%a6%a1%e0%a6%bf-%e0%a6%ae%e0%a6%be%e0%a6%9f%e0%a6%bf-potting-mix-1kg-pack-mgss3020/

Water Spray Bottle – 500 ml

 

Disclaimer:

In accordance with the universal custom of seed trade we give no warranty expressed or implied as to description, quality, productivity or any other matter of any way for the crop results beyond the purchased price especially under unsuitable season, abnormal weather, unsuitable soil and other unexpected conditions.

বীজ ব্যবসার সার্বজনীন প্রথা অনুযায়ী আমরা বিশেষত অনুপযুক্ত ঋতুতে, বিশেষত অনিয়মিত আবহাওয়া, অনুপযুক্ত মাটি এবং অন্যান্য ক্রয়মূল্যের বাইরে ফসলের ফলনের বর্ণনা, গুণমান, উৎপাদনশীলতা বা অন্য যে কোনও বিষয়ে বর্ণিত ওয়ারেন্টি প্রদান করি না অপ্রত্যাশিত শর্ত

 

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