Flowers

7 Seeds Oenothera Missouriensis, Missouri Evening Primrose, Oenothera Macrocarpa, Large-flowered Evening Primrose


$4.58 $7.05

Shipping to United States: $5.42
  • Details
    Sowing **Oenothera missouriensis**, also known as Missouri evening primrose or creeping evening primrose, is a simple method for growing this ornamental perennial. Valued for its large yellow flowers and creeping habit, it is ideal for borders, rockeries, and dry gardens. Here's how to successfully sow **Oenothera missouriensis**:

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    ### **Steps for sowing Oenothera missouriensis**

    #### **1. Sowing period:**
    - **Spring**: From March to May, when temperatures start to warm up.
    - **Autumn**: From September to October, for natural germination the following spring.

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    #### **2. Harvesting seeds:**
    - The seeds are found in elongated capsules that ripen after flowering. Harvest them when they are dry and brown, then extract the seeds.

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    #### **3. Seed preparation:**
    Evening primrose seeds have a natural dormancy, and pre-treatment can improve their germination.

    ##### **Cold stratification (recommended)**:
    1. Mix the seeds with moist sand or vermiculite.
    2. Place them in an airtight plastic bag or container.
    3. Store them in the refrigerator at a temperature of **4°C** for **4 to 6 weeks**.
    4. Take them out just before sowing.

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    #### **4. Preparation of the substrate or soil:**
    - **Substrate type**:
    - Mix seed starting soil with sand or perlite (2:1) for good drainage.
    - **Preparing the soil in open ground**:
    - Loosen the soil to a depth of 10 to 15 cm and incorporate sand if the soil is heavy or clayey.
    - **pH** :
    - Neutral to slightly alkaline (pH 6 to 8).

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    #### **5. Sowing seeds:**

    ##### **In pots or crates (recommended for optimal control)**:
    1. **Filling**:
    - Fill the containers with the prepared substrate.
    2. **Seed Arrangement**:
    - Sow the seeds on the surface, without covering them, because they need light to germinate.
    3. **Watering**:
    - Moisten the substrate with a spray bottle, without soaking it.
    4. **Placement**:
    - Place the containers in a bright place but away from direct sunlight.

    ##### **In the open ground**:
    1. **Soil preparation**:
    - Loosen and level the soil.
    2. **Sowing**:
    - Sow directly on the surface, then press the seeds lightly to bring them into contact with the soil.
    3. **Watering**:
    - Water gently to moisten the soil.

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    #### **6. Germination conditions:**
    - **Ideal temperature**:
    - Between **15°C and 20°C**.
    - **Humidity** :
    - Keep the substrate or soil slightly moist, but avoid overwatering.
    - **Light** :
    - Seeds require light to germinate.
    - **Germination time**:
    - Germination typically takes **10 to 21 days**, depending on conditions.

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    #### **7. Care after germination:**
    1. **Watering**:
    - Water moderately to keep the substrate or soil slightly moist.
    2. **Light**:
    - Gradually expose the young plants to brighter light.
    3. **Lightening**:
    - When the seedlings reach **5 cm**, thin out to leave **20 to 30 cm** between each plant.

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    #### **8. Replanting:**
    - **When to transplant**:
    - When the young plants measure about **10 cm** and have several well-developed leaves.
    - **Method** :
    - Transplant them into open ground or individual pots, spacing them **30 to 40 cm** apart.

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    #### **9. Maintenance during growth:**
    1. **Watering**:
    - Once established, evening primroses tolerate drought well. Water only in case of prolonged drought.
    2. **Mulching**:
    - Apply mulch to retain moisture and limit weeds.
    3. **Size** :
    - Remove faded flowers to prolong flowering.

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    ### **Additional Tips:**
    1. **Hardy plant**:
    - Missouri evening primrose is frost hardy and can remain in place for several years.
    2. **Attraction of pollinators**:
    - Its flowers attract bees, butterflies and other pollinators.
    3. **Natural propagation**:
    - Allow a few seed capsules to form to allow self-dispersal.

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    ### **Conclusion :**
    Sowing **Oenothera missouriensis** is an easy way to introduce this ornamental and hardy plant into your garden. With minimal care, it will beautify your outdoor spaces with its bright flowers and ease of maintenance. 🌱🌸
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