Add thinning instructions/requirements

[ammaratef45]

• [x] Bulls Blood Beets
• [x] Buttercrunch
• [x] Cherry Tomato
• [x] Arugula
• [x] Breen
• [x] Jalapeño
• [x] Flashy Trout Back
• [x] Celery
• [x] Green Mustard
• [x] Cardinale
• [x] Butterhead
• [x] Kale
• [x] Endive Lettuce
• [x] Bok Choi
• [x] Kale Lacinato
• [x] Lollo Rossa
• [x] Matilda
• [x] Monte Carlo
• [x] Purslane
• [x] Red Amaranth
• [x] Red Mustard
• [x] Red Sail
• [x] Red Salad Bowl
• [ ] Red Sorrel
• [ ] Romaine
• [ ] Rouge d'hiver
• [ ] Sorrel
• [ ] Swiss Chard
• [ ] Tatsoi
• [ ] Wasabi Greens
• [ ] Watercress
• [ ] Wheatgrass
• [ ] Banana Peppers
• [ ] Cape Gooseberry
• [ ] Cucumbers
• [ ] Mini Eggplant
• [ ] Mini Strawberries
• [ ] Sugar Snap Peas
• [ ] Sweet Peppers
• [ ] Black Cherry Tomatoes
• [ ] Jubilee Tomatoes
• [ ] Roma Tomatoes
• [ ] San Marzano Tomatoes
• [ ] Rio Grande Tomatoes
• [ ] Night-Scented Stock
• [ ] Borage
• [ ] Torenia
• [ ] Red Marietta Gold
• [ ] Radio Calendula
• [ ] Petunia
• [ ] Oopsy Daisy
• [ ] Lavender
• [ ] Fiesta Gitana
• [ ] Chamomille
• [ ] Campanula
• [ ] Lemon Balm
• [ ] Savory
• [ ] Chervil
• [ ] Zaatar
• [ ] Purple Basil
• [ ] Thyme
• [ ] Thai Basil
• [ ] Stevia
• [ ] Shiso
• [ ] Sage
• [ ] Rosemary
• [ ] Italian Parsley
• [ ] Oregano
• [ ] Mint
• [ ] Mexican Tarragon
• [ ] Lemongrass
• [ ] Dill
• [ ] Cilantro
• [ ] Chives
• [ ] Catnip
• [ ] Basil