How To Plant Blue Spruce Seeds

Plant Blue Spruce seeds in late spring when the soil temperature is between 70-75 degrees F. Mix the seeds with moist sand and store them in your refrigerator for 60 days before planting. Fill seed trays or pots with a seed starting mix and scatter the seeds on top. Cover them with a thin layer of finely sifted potting soil and place the trays in a sunny area. Keep the soil moist and at 70-75 degrees F until germination occurs in 30-60 days. Transplant the seedlings into individual pots when they are large enough to handle and plant them in their permanent location after all danger of frost has passed.

Find a space that has full sun or light shade and well-drained soil. If the spot you choose doesn’t have enough drainage, consider adding gravel or sand to improve it. Blue spruces prefer sandy or loamy soil, but will grow in almost any kind of soil as long as it drains well. Use your hands or a hoe to dig a hole about two inches deep and three inches wide. Fill the hole with water and let it drain completely before planting your seeds, unless it rained in the last 24 hours. During dry periods, you may need to water again after you plant the seeds.

Blue spruce (Picea pungens) is a medium to large sized evergreen conifer. This tree grows best in zones 2 to 7. In the wild, blue spruce can reach heights of 30 meters, but in domesticated settings, it is kept smaller with regular pruning or by growing in containers. Blue spruce trees are distinguished by their soft and flexible needles that grow in a spiral pattern and can be a distinctive silver-blue color. They produce cones that grow up to 6 inches long and also have a silvery-blue color, but they change to brown as they mature. When planted outside, blue spruce trees prefer a location that gets full sun exposure, but when grown inside in containers, they thrive with less light exposure.

Pre-treating blue spruce seeds is easy. Once the seeds have been treated, the next step is to prepare the growing conditions. The following instructions include planting blue spruce seedlings, watering, and companions. When using blue spruce seeds, you should place them in a sunny area and prepare a hole that is 1.5 times larger than the seedling’s root ball.

Pre-treatment of blue spruce seeds

Colorado Blue Spruce seeds are generally easy to germinate and have a short dormant period. In most cases, they are planted directly from the seed without any pre-treatment. However, you can do some pre-treatment to maximize the number of germinating seeds and synchronize germination with seedlings. Read below for more information. The process of pre-treatment varies depending on the species.

First, prepare soil that is well-drained. Blue spruce seeds need to be treated with a rooting hormone prior to planting. Make sure you choose a moist, well-drained spot in full sun. If you live in a heavily polluted area, this may affect the blue coating on the needles. Make sure the soil is moist to the depth of the roots and plant blue spruce seeds only in areas that have good drainage and no excessive moisture.

Then, stratify the seeds by mixing them with sand that contains about ten percent moisture by weight. The sand has a pH level of 7.7. After stratification, the seeds were placed in 2-02 metal tins with tightly-sealed lids. The seeds were also placed in paper envelopes to ensure that they remained moist. If you are not familiar with stratification, here is an introduction to how it works.

Growing conditions

The perfect growing conditions for blue sapling seeds vary slightly from one species to another. However, some factors are universal. The soil temperature needs to be between 72 and 79 degrees Fahrenheit or 22 and 26o C. The environment should be evenly moist, but not soggy. Seedlings need light to germinate. Excessive light will cause the seedling to be stunted, so water the seeds every three days.

The best growing conditions for blue tweedia are full sun and a moderate level of moisture. They are best planted in the early spring and can reach flowering size in about 70 to 85 days. Although they are in the milkweed family, they are not listed on most lists of toxins. Moreover, their sap is mildly toxic. Therefore, it’s a safe plant to grow. You can also grow this perennial in a sunny spot.

Seeds can be started indoors eight to ten weeks before the last frost. Start by sowing them in moistened soilless medium in small pots, three to four seeds per pot. Then, keep the pots in a dark, warm place until they germinate. After germination, water them regularly, using a water dish. Always water them from below to avoid root rot. Once seedlings have two sets of true leaves, they’re ready for transplanting.


To ensure a healthy, vibrant blue spruce tree, you need to make sure that you water the seeds frequently after transplanting them. In average garden soil, you don’t need to water your blue spruce tree every day. Constantly wet soil leads to root rot and other plant diseases, so water it only when necessary, when rainfall or irrigation isn’t available. Water deeply, not in shallow, circles, and use the shower setting on your hose rather than a jet-spray to avoid air pockets that could harm the plant.

To plant your blue spruce tree from seed, dig a hole twice as deep as the size of the seedling’s pot and fill the hole halfway with the same amount of soil. After planting the seedling, keep it in a bright light for several months. After the plant has emerged from its pot, water it to the depth of its roots to promote germination. Once it has sprouted, it’s time to transplant it outdoors.

You can also start blue spruce by taking semi-ripe cuttings in late summer. This tree is mostly trouble-free. Only occasionally will you experience dying foliage on your plant. It might be due to lack of water or restricted roots. Other problems may occur if your blue spruce tree is in a pot. Also, make sure to watch out for adelgids, which are aphid-like insects that feed on the sap and cause pineapple-shaped galls on the tips of young shoots. These are hard to control due to their waxy coating, but they will usually be eaten by predators.


For most people, planting blue spruce seeds is a great way to add elegance and variety to their landscape. The tree is a hardy perennial that grows well in USDA zones 2 to 8. However, not all blue spruce seeds are created equally. Selecting an inferior seed can leave you disappointed. The best companions for blue spruce trees are trees with similar characteristics and coloration.

When planting blue spruce seeds, start by shaking the bag vigorously. Once the bag is full, shake it to remove the seeds. After you’ve gathered all the seeds, plant them in the hole twice as large as the container. Be sure to moisten the soil as deep as the roots, and don’t forget to water! Make sure to fertilize your blue spruce seeds every couple of weeks for the first few years, or until the tree is large enough to stand on its own.

Once established, blue spruce seeds can be transplanted to different locations, including a rockery. They are great for landscapes because they grow slowly and will not compete with each other. As with any new plant, you should be sure to consider where you’ll be transplanting them. Make sure to leave space between them to allow for growth, and remember to remove the old ones when they die.

Cytospora canker

The most common types of spruce susceptible to Cytospora canker are Norway and blue spruce. Despite the widespread availability of fungicides, you can’t always control this invasive fungus. To prevent it, plant your trees in good sites with ample airflow and proper soil drainage. Mulch around the trees to increase their overall health, reduce competition from turfgrass, and water deeply. If you can, try to follow any other cultural practices that will support good tree vigor.

The first sign of Cytospora canker is dieback of individual branches. Branches may die completely on some occasions, but it is typically the lower part of the tree that suffers. As the disease spreads, the tree may start losing its ornamental value. The dying branches often produce a white resin residue that resembles bird droppings. Sunken cankers may also form above affected branches.

Pruning is one of the primary treatments for Cytospora canker. Branches with cankers should be pruned back to the trunk if the tree is showing signs of decline. Pruning during dry weather reduces the spread of the disease. Although fungicide sprays can control spores, they are not effective against Cytospora canker. Infected trees should be treated promptly.


If you are considering growing a blue spruce in your yard, you need to know about some basics about pruning this beautiful tree. Blue spruces tend to have one dominant vertical leader at the top of the tree. To prune the blue spruce, you should cut back the co-dominant leader branches to stubs half an inch above the attachment point. This will promote the growth of new shoots.

The best time to prune blue spruce is early spring, when the new growth is still small. Because its roots only reach about 2.5 inches of soil in its first year, pruning during this time may cause stress to the roots. However, this will heal quickly in the middle of spring. In addition, blue spruce seeds have different shapes and sizes than other varieties of trees. To prune the blue spruce tree, use sterile shears and gloves. The needles of blue spruce are sharp, so gloves are necessary.

Despite their size, blue spruce trees require only minor pruning to maintain a standard shape. If you are pruning a spruce, you should keep in mind that you should not prune the lower branches too much if the tree is weak. You should also consider taking a photo of the tree before you start the pruning process. Having a clear image in your mind will help you avoid pruning your blue spruce in the wrong way.

In conclusion,

Blue Spruce trees are not hard to grow from seed. It is a tree that needs to be planted in the fall and requires stratification, which is a period of cold, moist chilling. For best success with Blue Spruce seeds, plant them when they are fresh. They can store for several years if kept in moist, cool conditions in the refrigerator but will lose viability over time.

The most successful way to germinate Blue Spruce seeds is to plant them outdoors in the early fall and allow them to overwinter outside and germinate the next spring. This technique is called stratification. To stratify seeds, first soak them overnight in plain water then sow them in pots containing damp potting mix or sand. Cover the pots with plastic wrap and place them outside where they will experience freezing temperatures over winter. In the spring, remove the plastic wrap and keep the pots moist until seedlings appear. After seedlings emerge, transplant them into individual pots or into your garden beds.

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