How to Grow Seed-bearing plants
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Seed-bearing plants
Spermatophyta (division)
treeSeed-bearing plants encompass all plants that reproduce through seeds, including gymnosperms (conifers, cycads, ginkgos) and angiosperms (flowering plants). These plants have evolved sophisticated reproductive systems that protect developing seeds within specialized structures, making them the dominant land plants on Earth.
When should you plant Seed-bearing plants in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Seed-bearing plants timeline · Pittsburgh, PA (Zone 6b)
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Plant Seed-bearing plants
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Seed-bearing plants
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Seed-bearing plants dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Varies dramatically by species; some thrive in zones 1-3, others in zones 10-13
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Get my Seed-bearing plants timeline →Growth Stages
Germination
3-30 days depending on species and conditionsSeed absorbs water and activates metabolic processes; radicle (root) emerges, followed by cotyledons or first leaves breaking through soil
Maintain consistent moisture and appropriate temperature; most seeds require 65-75°F; some need cold stratification or scarification; provide light if species requires it
Seedling
2-6 weeksYoung plant develops true leaves and establishes primary root system; relies on seed reserves initially, then begins photosynthesis
Provide bright light (12-16 hours), maintain soil moisture without waterlogging, avoid fertilizer until true leaves appear, thin seedlings to prevent crowding
Vegetative Growth
4-12 weeks for annuals; months to years for perennials and woody plantsPlant focuses on leaf and stem development, establishing strong root system; no flowers or reproductive structures present
Provide consistent watering, balanced fertilizer (higher nitrogen), adequate light, harden off transplants gradually before moving outdoors
Flowering/Reproductive
2-12 weeks for flowering period; cone development takes months to years in conifersPlant initiates flower buds, blooms, and produces pollen and ovules; for conifers, cones develop; energy shifts from growth to reproduction
Reduce nitrogen fertilizer, maintain consistent water supply, provide full sun, deadhead spent flowers if you want to extend blooming (unless collecting seeds)
Seed Development & Maturation
2-8 weeks for annual/herbaceous plants; months to years for trees and shrubsFertilized ovules develop into seeds; structures like fruits, pods, or cones mature and harden; seeds accumulate reserves and develop dormancy mechanisms
Allow flowers to mature fully, do not deadhead if collecting seeds, reduce watering slightly as seeds ripen, support heavy seed heads if needed
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water, insecticidal soap, neem oil, or introduce natural predators like ladybugs
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Increase humidity, spray with water or miticide, neem oil, avoid over-fertilizing
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Alcohol on cotton swabs, insecticidal soap, neem oil, horticultural oils
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Horticultural oils, neem oil, pruning affected branches, dormant oil spray in winter
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Yellow sticky traps, insecticidal soap, neem oil, vacuum adults from leaves
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Bacillus thuringiensis (Bt), hand-picking, neem oil, spinosad
Uses
Food production
CulinarySeed-bearing plants provide the vast majority of human food including grains, vegetables, fruits, nuts, and oils. Staple crops like wheat, rice, corn, and beans are all seed-bearing plants essential to global food security. [source]
Pharmaceutical compounds
MedicinalMany seed-bearing plants produce bioactive compounds used in medicine and supplements. Examples include aspirin from willow bark, digoxin from foxglove, and countless herbal remedies from seeds, flowers, and leaves. [source]
Raw materials and fuels
HouseholdSeed-bearing plants provide wood for construction and fuel, cotton and linen fibers for textiles, paper pulp, resins, and numerous other industrial materials essential to human civilization. [source]
Ornamental and decorative uses
CraftFlowers, seedpods, cones, and colorful foliage from seed-bearing plants are used in flower arranging, dried arrangements, crafts, and landscaping to create beauty and visual interest. [source]
Ecological support
WildlifeSeed-bearing plants form the foundation of terrestrial ecosystems, providing food (seeds, fruits, foliage), shelter, and nesting sites for insects, birds, and mammals worldwide. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Timing varies: annuals typically reach maturity 30-180 days after planting; perennials and shrubs produce harvestable material after 1-3 years; trees take 3-50+ years. For seeds, wait until seed pods/cones fully mature and dry, then collect before natural dispersal. For other harvests (fruits, flowers), pick at peak ripeness for best quality.
Fun Facts
- 🌱 Seed-bearing plants (Spermatophytes) have dominated terrestrial ecosystems for over 300 million years, evolving from ancient seed ferns and eventually diversifying into the conifers, cycads, ginkgos, and flowering plants we see today.
- 🌱 The smallest seed-bearing plant is Wolffia (duckweed) at just 0.5-1.5 mm long, while the largest seed-bearing plant is the coast redwood tree, which can exceed 370 feet in height and live over 2,000 years.
- 🌱 Flowering plants (angiosperms) are the most recent major group of seed-bearing plants, first appearing in the fossil record around 140 million years ago, and now comprise over 300,000 species—more than 90% of all land plants.
Gardening Terms
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