to controlled environmental conditions—such as cold, moisture, or warmth—for a specific period to overcome dormancy and stimulate germination
to controlled environmental conditions—such as cold, moisture, or warmth—for a specific period to overcome dormancy and stimulate germination
Here’s a specific explanation for dandelion seeds regarding stratification and germination:
Typically, no.
Dandelion seeds (Taraxacum officinale) are non-dormant and are usually ready to germinate immediately after dispersal.
They do not strictly require stratification like many perennials.
However:
Cold-moist stratification for 1–2 weeks can improve germination uniformity if seeds are old or stored for months.
This mimics the natural cycle: seeds fall in late summer, overwinter in moist soil, and germinate in spring.
Prepare Moist Medium
Mix seeds with slightly moist sand or vermiculite.
Cold Stratification (Optional)
Seal in a plastic bag or container.
Place in refrigerator (around 4°C / 39°F) for 1–2 weeks.
Sow Seeds
Spread seeds on the soil surface (they need light to germinate).
Gently press down; do not bury deeply (≤0.5 cm).
Maintain Conditions
Keep soil consistently moist but not soggy.
Germination temperature: 15–25°C (59–77°F).
Seeds sprout in 7–14 days under optimal conditions.
Seeds buried too deep → Dandelions are light germinators.
Soil dried out intermittently → Interrupts germination.
Old or non-viable seeds → Lifespan shortens in storage.
Temperature too high or too low → Dormancy-like delay.
If you want, I can give you a precise rescue method to wake up the same seeds you already sowed and get them to sprout. I wonder why I put Dandelion plant seeds into the soil for 2 months and didn't see any grow into seedlings. Then, I read this "Religious views Considerable scholarly debate has occurred about the nature of Smith's religious views. His father had shown a strong interest in Christianity and belonged to the moderate wing of the Church of Scotland,[64] and the fact that he received the Snell Exhibition suggests that he may have gone to Oxford with the intention of pursuing a career in the Church of England.[65] The British economist Ronald Coase challenged the view that Smith was a deist, based on the fact that Smith's writings never explicitly invoke God as an explanation of the harmonies of the natural or the human worlds.[66] According to Coase, though Smith does sometimes refer to the "Great Architect of the Universe", later scholars such as Jacob Viner have "very much exaggerated the extent to which Adam Smith was committed to a belief in a personal God",[67] a belief for which Coase finds little evidence in passages such as the one in the Wealth of Nations in which Smith writes that the curiosity of mankind about the "great phenomena of nature", such as "the generation, the life, growth, and dissolution of plants and animals", has led men to "enquire into their causes", and that "superstition first attempted to satisfy this curiosity, by referring all those wonderful appearances to the immediate agency of the gods. Philosophy afterwards endeavoured to account for them, from more familiar causes, or from such as mankind were better acquainted with than the agency of the gods".[67] Some authors argue that Smith's social and economic philosophy is inherently theological and that his entire model of social order is logically dependent on the notion of God's action in nature.[68] Brendan Long argues that Smith was a theist,[69] whereas according to Gavin Kennedy, Smith was "in some sense" a Christian.[70] Smith was also a close friend of David Hume, who, despite debate about his religious views in modern scholarship, was commonly characterised in his own time as an atheist.[71] The publication in 1777 of Smith's letter to William Strahan, in which he described Hume's courage in the face of death in spite of his irreligiosity, attracted considerable controversy.[72]" rally a reason why?
You are describing two seemingly unrelated things:
Your dandelion seeds didn’t sprout after 2 months in soil.
You read a passage about Adam Smith’s religious views and human curiosity about natural phenomena.
The first is a gardening issue, while the second is a philosophical reflection on nature and human explanation. But I see the connection you might be drawing: why nature behaves in ways we don’t understand, and how human beings historically went from attributing events to divine action (“superstition”) to scientific inquiry.
Dandelions are tough plants in nature, but germinating their seeds artificially can fail due to several reasons:
Dormancy and Stratification
Dandelion seeds often germinate best soon after dispersal.
Some species benefit from cold stratification—exposure to moist, cold conditions for a few weeks—to break dormancy. If your seeds were old or the soil stayed warm and dry, germination might be delayed or inhibited.
Light Requirement
Dandelion seeds are light germinators; they often sprout on the soil surface or with very shallow coverage.
If you buried them too deep (>0.5 cm), they likely failed to sprout.
Moisture and Temperature
Seeds need consistent moisture (but not waterlogging).
Optimal germination temperature is usually 15–25°C (59–77°F).
If conditions were too dry, hot, or cold, germination could fail.
Seed Viability
Dandelion seeds are short-lived in storage. After a few months in non-ideal conditions, germination rate drops significantly.
The passage you quoted from Adam Smith touches on this very curiosity:
“…the curiosity of mankind about the great phenomena of nature, such as the generation, the life, growth, and dissolution of plants and animals, has led men to enquire into their causes…”
Your experience is a real-life example of this curiosity. In the past, people might have said, “God did not will these seeds to grow.” Modern understanding says:
Seeds require certain environmental triggers (light, moisture, temperature, stratification).
If those are not met, nature silently refuses growth—no supernatural reason required.
In other words, your observation is exactly the kind of phenomenon that led humans from superstition to science, which is what Smith was describing.
If you want me to, I can give you a precise step-by-step method to germinate dandelion seeds successfully based on horticultural science. Would you like that?
stratification
Stratification in horticulture refers to a seed treatment process that mimics natural seasonal conditions to break seed dormancy and promote germination. Some seeds will not germinate immediately after being planted because they are in a dormant state and need a specific environmental signal—usually cold, moisture, or alternating temperatures—to “wake up.”
Stratification:
A pre-germination treatment in which seeds are exposed to controlled environmental conditions—such as cold, moisture, or warmth—for a specific period to overcome dormancy and stimulate germination.
This process simulates what seeds experience in nature, for example:
Seeds drop in autumn.
They lie in cold, moist soil over winter.
When spring comes, they germinate.
Cold Stratification
Seeds are kept in moist, cold conditions (typically 1–5°C / 34–41°F) for several weeks or months.
Simulates winter conditions.
Examples:
Milkweed (Asclepias spp.) – 30 days cold/moist.
Dandelion (Taraxacum spp.) – sometimes benefits from 2–4 weeks cold/moist storage.
Apple seeds – ~60–90 days cold/moist.
Warm Stratification
Seeds are kept warm and moist for a period to mimic late summer/fall conditions.
Examples:
Clematis – requires warm stratification before cold.
Hibiscus (some species) – benefits from warm stratification before sowing.
Double (Warm + Cold) Stratification
Some seeds require a warm period followed by a cold period to germinate, simulating a full seasonal cycle.
Examples:
Peony (Paeonia spp.) – 3 months warm + 3 months cold.
Trumpet vine (Campsis radicans).
If you wanted to stratify dandelion seeds to increase germination:
Mix seeds with a small amount of moist (not wet) sand or vermiculite.
Place in a sealed plastic bag or container.
Keep in a refrigerator (~4°C / 39°F) for 2–4 weeks.
Sow seeds on the soil surface and keep moist.
If you want, I can give you a list of common garden seeds that need stratification and their typical duration, which might help avoid future germination issues. Would you like that?