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The Blues Weeping Colorado Spruce [7+ Easy Conifer Care Tips]

Relish the cascading branches of the Blues Weeping Colorado Spruce tree that looks like a lovely waterfall in your garden all year round with proper care.

Generally, the Blues Weeping Colorado Spruce is an evergreen conifer tree requiring full sun, well-draining and organically rich soil, 40-70ºF temperatures, and high humidity to grow. Also, spring fertilization, watering during dry spells, and occasional pruning will benefit it.

Skim through the article to learn everything you can do to decorate your garden with the blue needles of the Colorado Blue Spruce.

Overview Of The Blues Weeping Colorado Spruce

Known for its adaptability, the Blues Weeping Colorado Spruce is a native of the central Rocky Mountains of the southwestern United States.

The Blue Colorado Spruce tree, Picea pungens ‘The Blues,’ originated in 1982 as a mutated cultivar. Larry Stanley of Stanley & Sons Nursery found it growing in his nursery.
A Blues Weeping Colorado in a garden
The foliage of Blues Weeping Colorado is its focal point.

Some of the overviews with its physical appearance are given below.

Scientific NamePicea pungens 'The Blues'
Common NameColorado Spruce

Blue Spruce

Blues Weeping Colorado Spruce
Status & EcologyHabit: Evergreen conifer trees with mounding, arching, or weeping branches

Habitat: Meadows, Upland and Slopes, Stream Sides, Mountain Valleys

USDA Zones: 2-8
Growth RateSlow to moderate
Plant SizeNatural Setting: 60-75 feet long & 10-20 feet wide

Garden: 5-10 feet long & 5-10 feet wide
Growing SeasonsSpring and Fall (Highly preferred)

Summer and Winter (Less Preferred)
LeafShape: Pyramidal with short sharp needles

Size: 3/4 to 1.25 inch long

Color: Bright bluish green with silver lines on each side

Texture: Prickly
Flowering SeasonSummer (Rarely)
FruitsCones of 3-4 inches long
Grown ForEvergreen needles like foliage for landscaping and wind protection

The Blues Weeping Colorado Spruce had such a unique elegance that the American Conifer Society declared it as ‘Collectors Conifer of the Year’ in 2008, along with Chamaecyparis obtusa ‘Gitte.’

The Blues Weeping Colorado Spruce: Cultivation And Care

Homing the native plant of America for its rustic silvery blue foliage can be the all-time wish of many gardeners.

Doing so is easy as the care needs of the Blue Colorado Spruce are low. In addition, the stiff needles stay in the stems all year round in cool summer areas.

So, provide the evergreen conifer with all the care it demands. The major 8 requirements are listed below.

1. Sunlight Requirement

Provide the plant at least 6 hours of full sun daily. However, place it in partial shade during the summer afternoons if growing it in the hardiness area above Zone 8.

The protection is to prevent the burning of the leaves from scorching light and damaging the plant’s look.

Meanwhile, the Blue Colorado Spruce enjoys direct morning light. You can maintain the light requirement even with a grow light.

2. Temperature Range

The Blues Weeping Colorado Spruce prefers moist and cool climates.

So, maintain the temperature at a range of 40 to 70ºF. Meanwhile, the mature plant is hardy enough to tolerate temperatures up to -40ºF but not longer.

Meanwhile, avoid higher temperatures as much as possible as they can stunt the Blue Colorado Spruce growth.

So you can try balancing the hot days by misting the plant to drop the temperature and providing the plant with proper ventilation.

3. Humidity Level

Maintain higher humidity (70-80%) during spring and summer. In contrast, drop it to 55-65% during fall and winter for sturdier growth.

You can maintain humidity by installing a humidifier for indoor potted Blue Colorado Spruce.

As for the outdoor tree, you can plant it nearby a damp place or have a water reservoir near the plant.

However, avoid excess air moisture near the Blues Weeping Colorado Spruce as it invites diseases and pests.

4. Water Need

As a drought-tolerant plant, the Blue Colorado Spruce does not like stagnant water.

So keep the watering at once every 1-2 weeks for older plants. However, water young plants regularly to allow sturdier roots.

Also, check at least 4 inches of topsoil, if the planter exceeds 8 inches in depth, for any moisture to prevent overwatered conditions.

Alternatively, you can check the moisture using a soil tester and water it according to the reading.

Also, use a watering can with longer spouts to let the water fall directly into the soil.

5. Soil Requirement

Well-draining, slightly acidic soils (pH 5.5-7.0) rich in organic matter fit the Blue Colorado Spruce. Sandy soil or slightly clayey soil can fit the description.

However, do not use highly dense soil as it can clog the root’s aeration and water intake.
A garden with Blues Weeping Colorado Spruce in the middle
Till the ground of Spruce once in a while to promote drainage.

Such conditions result in overwatering, which can cause your Colorado Blue Spruce leaves to turn yellow and suffer from root rot.

So, for the best, keep the soil well draining and slightly moist to enjoy a healthy tree. Meanwhile, improve the degraded soil quality by adding manure or nutrient soil.

6. Fertilizer Appliance

Fertilize the plant with balanced slow-release fertilizer 2 to 4 times a year and water it immediately to prevent root burning.

It is better to apply fertilizer in spring and summer, decrease during fall, and cease in winter.

However, if you have recently transplanted a new Blue Colorado Spruce from a nursery, provide nitrogen and phosphorous once every 2 weeks.

Increase the potassium dose in the fall to help thicker trunk growth. Do it until the tree matures and then return to the normal dose, as mentioned above.

You can also use slow-releasing organic fertilizer, as the Blue Colorado Spruce needs support throughout its long lifespan.

7. Occasional Pruning

Pruning is not mandatory for the growth of the Colorado Blue Spruce as the plant features a triangular structure and does not hamper the growth of lower branches.

However, if the foliage becomes too dense, you might have to prune one or two branches to reduce the fight for nutrients.

Also, you can trim off any damaged and yellow leaves due to common pests like aphids, spider mites, and gall adelgids.

Diseases like fungal tip blight, needle cast, and cytospora canker can trouble the tree leading to sticky tips, needle drops, and leaf scars.

So, you can snip off broken twigs or trim them off to give any shape but leave half their size during winter or early spring.

Apply neem oil and insecticidal soap to control pests problem and copper fungicide in case of disease infestation.

8. Repotting and Aftercare

Mostly conifer gardeners plant the Colorado Blue Spruce during the spring and fall time of the year, which attains a growth of 12 inches yearly.

This growth pace can make the potted Colorado Blue Spruce easily root bound within 5 years of plantation.

Thus, you need to repot the potted plant into the ground in early spring before the buds break out. Choose a location receiving partial sunlight for 3-6 hours.

Meanwhile, restrain from removing all of the original soil from the trunk to refrain from stressing the tree.

How Big Do The Blues Weeping Colorado Spruce Get?

The Colorado Blue Spruce is a slow-growing but long-lasting evergreen conifer with over 200 years of lifespan.

You can expect a single Blues Weeping Colorado Spruce to get as big as 75 feet in its place of origin with a spread of 10 to 20 feet.

But in normal conditions matching their native zone, the Colorado Blue Spruce get 10-12 feet big with 5-10 feet width. This might take them about 10 years.

Nevertheless, how big the Colorado Blue Spruce get, they are never messy. So you do not have to worry about falls picking up, even if some have fallen to the ground.

As for the twigs, you can use them as propagation media instead of throwing them away because Colorado Blue Spruce is easy to propagate from cuttings.

You can even use graftings, seeds, and air layering methods to propagate Colorado Blue Spruce, but semi-hardwood cuttings are the best.

Start by collecting the cuttings in the early morning. Then, dip the cut end in a rooting hormone. Lastly, plant it in a mixture of peat and sand.

A pot with a twig of Colorado blue Spruce
Growing the Spruce from cutting is the fastest and most successful.

Supply the cutting with all the care requirements mentioned above and wait at least 4 to 6 months to let it be established.

Remember, a Spruce tree should be planted at least 10 feet far from a house, allowing the plant enough space to spread its branches.

Design Ideas Using The Blues Weeping Colorado Spruce Tree

Famous as Christmas trees, the Blues Weeping Colorado Spruce has always been a favorite landscape plant.

The color shade it provides is difficult to find and even more difficult to replace.

So, looking after the hardiness and low maintenance, the Blue Colorado Spruce is suitable for rock gardens, bordering, and stone walls.

You can stake the tree to a desired height and allow the twigs to ramble. Or train the leaves to grow horizontally and flow along the fence or stone wall and allow them to cascade across the floor.

Moreover, you can plant the Spruce in a sunny bordered location to showcase its bluish-green foliage. It can be a center of attraction that contrast with other garden plants.

Some of the plant combinations you can try with the Blues Weeping Colorado Spruce according to the height, bloom time, and color variations are:

  1. Height Complement: Dwarf plants like Creeping Phlox or Sedum can contrast the tall Colorado Blue Spruce. For a mid-level accent, you can also choose medium-range perennial plants like Russian Sage or Catmint.
  2. Bloom Time Complement: Choose flowering plants that match the Spruce’s growing season to add a vibrant color burst to the garden. It includes Tulips, Daffodils, Coneflowers, Black-eyed Susans, and Asters.
  3. Color Complement: Some plants that create an eye-catching combination with the bluish needle of the Spruce are Lambs Ear, Coral Bells, Coreopsis, Goldenrod, Yews, and Boxwoods.

However, consult any nearby local gardening office or nursery for more precise information based on your location.

And do check for the specific requirements before bringing them together, as some may have special care needs.

The Blues Weeping Colorado Spruce For Sale

After learning all the care needed and uses of the Colorado Blue Spruce, you are ready to bring one as it saves your seed sowing time.

Look at the trustworthy sites below with their delivery time to bring one home at a reliable price.

Where to BuyExpected Delivery Time
The Tree CenterWithin 4-6 days
AmazonWithin 8-13 days
Conifer KingdomWithin 3-10 days
Garden Goods DirectWithin 6-12 days

From Editorial Team

Extra Knowledge!

The Blue Spruce was officially declared ‘The State Tree of Colorado’ by the General Assembly on March 7, 1939.

However, do not confuse Blue Spruce with the Blues Weeping Colorado Spruce, as the latter is a cultivar of Blue Spruce from the same species with brighter bluish needles.