- A mild green chile that matures to a brown color and is often used as a Pablano for stuffing or dried in mole sauce.

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Pepper Seeds - Hot - Mulato Isleno

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Selected variant: 250 mg Packet. Price: $3.89.
Mountain Valley Seed Company
High-quality heirloom & open-pollinated seeds since 1974  
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70-79 Days to maturity (from transplant). Capsicum annuum. Mulato Isleno Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant, hot-type pepper with mild heat levels. 1,000 to 1,500 Scoville Heat Units. Suitable for growing in containers, garden plots, raised beds, and greenhouses. Mulato Isleno are excellent for stuffing as rellenos, very fat, 6 x 3 in. diameter at stem, mild and distinctive flavor. ~4,000 seeds/oz.

SKU: 44491

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Growing Mulato Isleno Peppers in the Vegetable Garden

Start growing your peppers by prepping your seed starting trays. You should plant the seeds about 6-8 weeks before the last spring frost date. Plant the seeds in either a well-draining soil or in a seed starting mix like Minute Soil Coco Clair. The pH of the soil should be about 6.5. Plant those seeds about 0.25 inches deep into the soil and keep it nicely moist, but don't drown them! A handy trick is to stick your finger into the soil - if it feels dry, give the seeds a drink, but if it's wet, wait for a bit for the soil to dry out. Keep the peppers in a warm area, between 80-90 F, so they can germinate. A grow light is a great way to keep their growing area warm. Once the seedlings emerge, normally after 7-10 days, you can move the plants to a cooler area to harden them off before transplanting them. After they are a few inches tall, you can plant them in the garden or in planters! Plant them 12-18 inches apart, and space your rows about 2-3 feet apart. Bury the roots completely in the soil. Be sure not to plant hot peppers and sweet peppers close together, as this can lead to cross-pollination!

Taking good care of your plants will ensure that you end up with a great harvest of peppers! Make sure to water them consistently. Sprinkling mulch around the base of the plant can help retain moisture and can also help with suppressing weeds. You can also try companion planting - plant some marigolds and basil alongside your peppers to attract pollinators and keep the pests at bay. Make sure to support the plants with stakes or trellises, which will help them grow upright and will support the plant as they grow fruit. You can try giving your plants a fertilizer full of phosphorus and calcium to help promote their growth. And keep an eye on your peppers - if you spot any pests or diseases, make sure to treat them immediately!

Harvesting Mulato Isleno Peppers

As they mature, your peppers will turn from a green to brown, then purple-black. This variety will be ready for harvest about 70-79 days after transplanting. Since these are hot peppers with some heat, they're tasty both when fully ripe or premature - as they ripen, they’ll become a blackish color. To harvest the pepper, you can cut the stem with garden shears of a knife. Make sure to be gentle and not damage the plant so it can keep producing fruit! Because this is a hot variety, make sure you wear gloves and wash your hands immediately after harvest.

About Mulato Isleno Pepper Garden Seeds

Hot peppers originated in Mexico over 6,000 years ago, but are grown all over the world today!

These peppers were likely bred for their early maturity and deer and heat resistance. They are also drought tolerant.

These peppers grow about 3 inches wide and they are great for stuffing.

Mulato Isleno peppers grow well in greenhouses, raised beds, and garden plots.

Tips From Our Gardeners

"Mulato Isleno peppers have a mild and distinctive flavor, with about 1,000 to 1,500 Scoville Heat Units."

- Chelsea Hafer, True Leaf Market Writer

Other Resources

Mulato Isleno Pepper Seeds Per Package:

  • 250 mg packet - Approximately 35 Seeds
  • 0.25 oz - Approximately 1,000 Seeds
  • 1 oz - Wholesale - Approximately 4,000 Seeds
  • 4 oz - Wholesale - Approximately 16,000 Seeds
  • 1 lb - Bulk Seeds - Approximately 64,000 Seeds

Non-GMO Mulato Isleno Pepper seeds are available for Fast Free Shipping (opens in a new tab) on qualifying orders.

Basic Info

Basic product information
PropertyDetails
Latin Name: Capsicum annuum
Mulato Isleno Pepper Color: Purple, Brown

Growing Info

Growing information
PropertyDetails
Hardiness Zone: 4, 5, 6, 7, 8, 9, 10, 11 Technically a tender perennial, but commonly grown as an annual. Perennial in zones 10 and 11.
Days to Maturity: 70-79 Days (from transplant)
Days to Germination: 7-10
Seeding Depth: 0.25 inch
Plant Spacing: 12 to 18 inches
Row Spacing: 24 to 36 inches
Plant Height: 18 to 24 inches
Growth Habit: Upright
Soil Preference: Well-draining, loose (sandy loam), slightly acidic (6.5 pH), and moisture retaining. Too much nitrogen in the soil may lead to more foliage production and less fruiting, similar to tomatoes. Peppers also need sufficient amounts of phosphorus and calcium. We recommend using a balanced fertilizer for the best results.
Temperature Preference: Warmer (70-85 F). During high heat, foliar and flower development slow or pause until temperatures return to the preferred range.
Germination Temperature: 80-90 F
Light Preference: Full Sun

Other Info

Other product information
PropertyDetails
Direct Sow: No
Start Indoors: Yes Start Indoors 7-9 weeks before your last spring frost date. Harden off and transplant when seedlings are 6-8 inches tall. Bury the stem slightly deeper than the root ball. Avoid planting hot and sweet peppers right next to each other, as they can cross-pollinate, potentially affecting the flavors of your harvested peppers.
Pepper Pollination: Peppers have perfect flowers (male and female parts) and will self-pollinate. However, wind and pollinator activity may increase success rates of fertilization and fruit production.
Pepper Type: Hot - These peppers all have some heat and usually rank at least 100, but usually 500 or more on the Scoville scale and have heat ranging from mild to extremely hot.
Plant Width: 12 to 18 inches
Deer Resistant: Yes
Scoville Heat Units: 1,000 to 1,500
Heat Level: Mild - 100 to 2,500 on the Scoville Scale. Example: Poblano Ancho or Pepperoncini
Growth Speed: Mid - Ready for harvest around 76 to 90 days from transplant.
Pests and Diseases: Peppers are commonly susceptible to cutworms, aphids, flea beetles, bacterial spot, Phytophthora, sunscald, and blossom end rot. To avoid or reduce problems with pests and diseases, stick to a regular watering schedule (drip irrigation is preferred), plant into well-draining soils, and utilize practices such as crop rotation. When taking pest control measures, consider utilizing integrated pest management principles by using mechanical removal, biological control, and other cultural practices before turning to chemical agents.
Garden Size: Greenhouse, Garden Plot, Raised Bed, Container
Pepper Use: Often used as a Pablano for stuffing or dried in mole sauce. Can be used fresh or dry.
Climate Tolerance: Heat, Drought

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