How large will my plant grow?

So, how large will my plant grow?

Pruning nursery plants to maintain size

So, a couple of days ago, someone asked me how large a Bruns Spruce typically grows. We provided them with the size range that's indicated on the sales tag, which stated that the Bruns Spruce can reach heights between 7 to 9 feet. This is a common size range that many nurseries use to give potential buyers a general idea of what to expect when they purchase this particular species of spruce. However, the conversation took an interesting turn when she mentioned that she had visited another nursery where the same Bruns Spruce was listed with a significantly larger size range, specifically between 15 to 20 feet. Naturally, she was curious and a bit perplexed by this discrepancy, leading her to ask why one tag indicated a height of 7 to 9 feet while the other suggested a much taller range of 15 to 20 feet. And that’s indeed a great question, one that touches on several important factors regarding plant growth, nursery practices, and the variability inherent in horticulture.

To address her inquiry, it’s essential to understand that the size listed on a plant's tag can be influenced by various factors, including the age of the tree, the conditions in which it was grown, and the specific cultivar being sold. For example, the 7 to 9 feet range may refer to the average height of a Bruns Spruce that is younger or has been pruned to maintain a smaller stature, making it more suitable for residential landscapes or smaller gardens. In contrast, the 15 to 20 feet range might reflect the potential height of a fully matured Bruns Spruce that has been allowed to grow without restriction, showcasing its natural growth habits in optimal conditions.

Moreover, different nurseries may have varying growing techniques and environmental conditions that can affect the size of the trees they sell. Factors such as soil quality, sunlight exposure, watering practices, and even the specific climate of the nursery's location can all contribute to how tall a Bruns Spruce can ultimately grow. Additionally, some nurseries may specialize in producing smaller, more manageable plants for urban settings, while others may focus on larger specimens that are more suited for expansive landscapes. This variance can lead to differences in the size ranges provided on tags, which can understandably confuse consumers.

Fresh load on nursery stock

Furthermore, it’s worth noting that the Bruns Spruce, scientifically known as *Picea glauca* 'Bruns', is a cultivar of the white spruce and is prized for its attractive, dense foliage and conical shape. While it is commonly used in landscaping due to its aesthetic appeal and adaptability, the growth potential can vary widely based on cultural practices and environmental conditions. Therefore, when purchasing a Bruns Spruce or any tree, it's important for buyers to consider not only the size indicated on the tag but also the tree's growth habits and the conditions of their own planting site. Understanding these nuances can help ensure that they select a tree that meets their landscape needs and expectations.

So, here’s our answer! The tag stating 15-20 feet represents its expected growth in 20 years in California, indicating the plant's potential height when fully matured under optimal conditions in that specific climate. California, known for its diverse ecosystems and mild climate, provides an environment where many plants can thrive year-round. This extended growing season allows for continuous growth, which is reflected in the substantial height range given on the tag. On the other hand, the tag that references the expected growth rate in Boise, Idaho, highlights the differences in environmental conditions that affect plant development. Boise experiences a much shorter growing season due to its colder winters and varying climate, which typically allows for about 6 to 8 months of active growth each year. This significant difference in climate means that plants in Boise may not reach the same height as those in California, reflecting the adaptations they must undergo to survive in a more temperate environment.

Items that are considered nursery stock are live plants, which means they continually grow during the growing season, adapting to the local climate and soil conditions. Nursery stock encompasses a wide variety of plants, including trees, shrubs, and perennials, all of which are cultivated to be sold to consumers for landscaping, gardening, and other horticultural purposes. Most of us realize that in California, a plant typically grows 12 months a year, benefiting from the state's warm temperatures, ample sunlight, and generally favorable precipitation patterns. This continuous growth cycle allows for more rapid maturation and greater height and spread of plants over time. In contrast, in Boise, Idaho, the growing season is significantly shorter, and gardeners and landscapers must take this into account when selecting plants for their gardens. The climatic conditions in Boise can lead to a more pronounced dormancy period in the winter months, which can affect the overall growth cycle and longevity of certain species.

Understanding these growth expectations is crucial for anyone looking to cultivate plants in different regions, as it influences not only the selection of plant varieties but also the planning of landscaping projects to ensure that plants will thrive in their respective environments. By being aware of these differences, gardeners can make informed decisions that align with the specific climatic conditions of their area, ensuring that their plants can flourish and reach their full potential.

Now, let’s talk about that Bruns Spruce, a remarkable species known for its resilience and aesthetic appeal in various landscapes. When discussing this tree, it’s important to note that most nursery stock is typically listed based on its growth at 20 years of age. This standard provides a benchmark for potential buyers to understand the size and maturity they can expect from these trees when they reach that milestone. However, it is crucial to recognize that live plants never truly stop growing; they simply slow down their growth rate as they age. This gradual decline in growth speed can be attributed to several factors, including environmental conditions, soil quality, and the overall health of the tree. Furthermore, while it is true that not all nursery tags are created equal, many of them are produced in states like California, Oregon, and Washington. These regions are renowned for their favorable climates, characterized by mild temperatures and extended growing seasons that allow for optimal plant development. The conditions in these areas provide a nurturing environment where Bruns Spruce can thrive, leading to robust and healthy specimens that are often sought after by gardeners and landscapers alike. In addition, the production practices in these states often involve careful selection and propagation techniques that ensure the genetic quality of the trees. Growers in these regions are adept at cultivating a variety of plant species, including the Bruns Spruce, taking into consideration factors such as pest resistance, drought tolerance, and adaptability to different soil types. This attention to detail not only enhances the growth potential of the trees but also increases their longevity and overall vitality once they are planted in their new environments. In summary, understanding the growth characteristics of the Bruns Spruce, including the implications of its age-related growth patterns and the advantages of its nursery origins, is essential for anyone considering adding this beautiful tree to their landscape. By appreciating these factors, gardeners can make more informed decisions that will ultimately lead to a thriving and attractive outdoor space.

You certainly can’t pin all plants to the information provided above, but it should give you a reasonable explanation as to why the same plant can exhibit different growth rates under varying circumstances. The growth rate of a plant is influenced by a complex interplay of various factors, and understanding this can help you optimize the conditions for each species. One of the most significant elements that affect a plant's growth is the care provided to the plant. This encompasses a range of practices and considerations that directly impact the health and vitality of the plant.

For instance, the amount of water a plant receives plays a crucial role in its growth. Too little water can lead to dehydration, causing the plant to wilt and stunt its growth, while too much water can result in root rot and other issues that hinder development. Therefore, it is essential to find the right balance based on the specific needs of the plant species. Furthermore, the timing and method of watering can also make a difference; for example, watering in the early morning can allow for better absorption and reduce evaporation losses.

Another critical factor is the type and amount of fertilizer used. Fertilizers provide essential nutrients that plants need to thrive, such as nitrogen, phosphorus, and potassium. However, the application of fertilizer must be tailored to the specific requirements of the plant. Over-fertilization can lead to nutrient burn and other detrimental effects, while under-fertilization can result in nutrient deficiencies that stunt growth. Additionally, the timing of fertilizer application can influence growth rates, as plants may require more nutrients during certain stages of their development.

Soil conditions also play a pivotal role in plant growth. The composition of the soil, including its texture, pH level, and organic matter content, can significantly affect how well a plant can absorb water and nutrients. For example, sandy soils drain quickly and may require more frequent watering, while clay soils retain moisture but can become compacted, limiting root growth. Amending the soil with organic matter or using raised beds can improve drainage and nutrient availability, thus promoting healthier growth.

In addition to these factors, environmental conditions such as light exposure, temperature, and humidity also contribute to the variability in growth rates among plants. Different species have varying light requirements; some thrive in full sun, while others prefer partial shade. Temperature fluctuations can also affect metabolic processes within the plant, and extreme temperatures can be detrimental to growth. Humidity levels can influence transpiration rates and overall plant health, particularly for tropical species that thrive in high humidity environments.

In conclusion, while it is tempting to generalize about plant growth rates based on a few observations, the reality is that a multitude of factors come into play. By carefully considering the care provided to the plant, including water, fertilizer, and soil conditions, as well as environmental factors, one can better understand and manage the growth rates of various plant species. This holistic approach can lead to more successful gardening and cultivation practices, allowing for healthier plants that reach their full potential.

Charlie Hartman - Idaho Certified Nurseryman

The Home & Garden Store - Boise, Idaho

Phone: 208.917.4820