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Science-based gardening information for Colorado communities from CSU Extension, Denver Botanic Gardens, and Green Industries of Colorado.

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Miscellaneous Videos

Click here to see the complete Planttalk Colorado™ playlist. Bee Good to the Bees Beginner’s Guide to Plants Bird Feeding Tips for Colorado Care for Houseplants Colorado Gardening for Beginners Container Gardening Extension Office Basics Fairy Gardens Full Vs. Partial Sun Perennial Plants How to Compost How to Make a Terrarium How to Speak Landscaping Indoor Foliage […]

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1818 – Transplanting into the Garden

It’s necessary to plant bedding plants as soon as the danger of frost is past or when the soil warms sufficiently. In Colorado, planting is usually safe from about mid- to late May, depending on the types of plants and the area of the state. Consult with employees of local nursery or garden centers for […]

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1814 – Seeding Vegetables

Success at starting vegetables from seed outdoors begins with proper soil preparation. After organic material is mixed into the soil, level the surface and remove large clods for a fine bed. There should be no cracks in the surface of the soil where small vegetable seeds can be buried. A rule of thumb is that […]

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1824 – Watering Vegetables

During summer, irrigation is the key factor if you want to grow quality vegetables. A few examples illustrate this point. What vegetable requires more watering than others? Beans require more frequent irrigation than most other vegetables for optimal production and in the blossom- and fruit-growth stages use the most water of any vegetable. Depending on […]

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1809 – Growing Warm Season Vegetables

What is a warm season vegetable? Beans, corn, cucumbers, melons, okra, eggplant, peppers, tomatoes, pumpkin and squash are warm-season vegetables. Many of these crops grow under cool conditions, but won’t produce fruit when night temperatures are in the 50 degree Fahrenheit range. They need warm temperatures to grow and mature. Once the fruit begins to […]

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1808 – Growing Onions from Seed

What are the benefits of growing from seeds? Growing onions from seed is economical, and seed-started onions don’t send up flower stems as often as transplanted bedding onions do. An onion’s flowering process ruins the quality of a bulb onion. How do onions grow in Colorado? In northern Colorado, onions grown for winter storage will […]

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1848 – Cover Crop Time

Mid-October is a good time to plant winter cover crops for improving soils where vegetables are grown. A long term plan for building and maintaining desirable levels of both organic matter and nitrogen is desirable. Non-legume cover crops help with organic matter and legumes can add both organic matter and nitrogen. What are good cover […]

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1712 – Preparing the Planting Site

Improper site preparation is a common reason trees and shrubs don’t grow after planting. It is a particularly big problem in areas where the soil is a heavy clay type, typical of the Rocky Mountain region. Such soils have poor drainage and lack a sufficient amount of oxygen to allow vigorous root growth. How can […]

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1720 – When to Fertilize

When leaves, needles and twigs decompose on the ground, they provide nutrients naturally to plants. Often this is adequate fertilizer, especially for native trees and shrubs. What do different fertilizer ingredients do for the soil? Store-bought fertilizers contain nitrogen (N) and other ingredients. When a plant gets extra nitrogen, it will grow more rapidly, which […]

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1625 – Using Manure in Vegetable Gardens

Adding animal manures can be an excellent way to improve garden soils. Manures can provide many of the micronutrients required for robust plant growth. In addition, adding manure can have significant beneficial effects on the water- and nutrient-holding capacity of the soil. The breakdown of manure in the soil results in a variety of organic […]

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